Hello RS,
Sorry to hear that you're going through so much grief over this. But I think you're on the right track.
As far as this F&DS thing goes, as sixofnine points out, it's just not that difficult. Common sense, as displayed by virtually all other Christian religious groups who read Matthew 24, tells us that the illustration has everything to do with individual Christians and nothing to do with a specially appointed group of "anointed" who tell all other Christians what to do.
A bit of history on the F&DS doctrine taught by JWs: Until about 1894, the Bible Students' view (dictated by their founder Charles Taze Russell) was the same as that of other Christians. About that time there arose a serious marital problem between Charles and his wife Maria (Maria was an editor of Zion's Watch Tower and, it turns out, the principle author of the Millennial Dawn books published by the Watch Tower Society up to then), which they soon resolved. Maria then came up with the idea that the "faithful and wise servant" (using KJV terminology) was a specific person appointed by God in "the last days", and that that person was none other than her husband. Charles gradually came to accept this title, and although he never claimed it in public, he did so in private, and all the Bible Students came to revere him as "that servant". The Watch Tower Society taught this as a specific doctrine from shortly after Russell's death in 1916 through about 1927, when J. F. Rutherford decided that "the Society", with him in firm control, was actually the composite "faithful slave". About 1935 Rutherford came up with the doctrine of a heavenly "anointed" class as opposed to an earthly "great crowd" class, and he then changed the F&DS doctrine such that all of the "anointed" were said to be part of this "slave". However, in practice then, as today, most of the people who claim to be of this "anointed class" had nothing whatsoever to do with providing "spiritual food in due season" to the community of JWs -- all of this "food" comes from a few men in Brooklyn and nowhere else.
Note that the actual history of this doctrine proves that it's simply a "doctrine of men", and like so many other Watchtower doctrines, has evolved over time. Also note that, if any appointing of a claimed "slave" has been done, it has demonstrably been done only by the people who claim to be that "slave". No one has seen any sort of miraculous manifestations from God about this. They claim that their works prove them right, but a careful look at the history of the JWs and Bible Students shows that they're no better Christians than anyone else, and in some cases they're a lot worse than the Christians they love to criticize. In fact, it's easy to show, from JW publications, that the Bible Students fit the modern-day JW definition of "apostate".
Here is perhaps the most important disproof of all of the JW F&DS doctrine: Like I told you in a post on page 8 of this thread, the JW doctrine of the F&DS slave is internally inconsistent, because it has the events of Matthew 24:45-47 (they claim that JW leaders were specially appointed "over all of Christ's belongings" in 1919) occuring many decades before the events of verses 32-41 (which they teach will soon take place as part of "the great tribulation"), whereas from the text itself, it's obvious that the events are part of a continuing sequence. Since the JW teaching clearly contradicts the Bible, the doctrine is wrong and cannot be part of any "spiritual food" coming from a JW "slave class". Therefore the people who are teaching that there is a "slave class" are teaching falsehoods in God's name.
From your post, it's obvious that the PO was giving you the standard ridiculous arguments that JWs use to deceive people into believing that their leaders comprise a composite "faithful and discreet slave". Let's look at each of your statements of what he said and see what's wrong with what he told you.
: "Well based on Mat 24, which consists of Jesus speaking about what would happen in the "last days", do you think there would be a F&DS giving the spiritual food at the proper time?" (It would seem so)
This question contains many false assumptions. First, it assumes that we today are living in "the last days". This JW doctrine is dicey, at best, in terms of purely textual considerations of Matt. 24, Mark 13 and Luke 21. Their claims about 1914 and a "composite sign" visible since 1914 are demonstrably false. I've shown above that their claims about Matt. 24:45 are false. So the guy was using a pile of false assumptions to lead you to a false conclusion.
: "Who do you think the ONLY group is that represents the things Jesus talked about here ... such as being hated in Jesus' name, giving PROPER spiritual food at the right time, keeping on the watch during the last days, preaching the good news, etc?" (Answer was supposed to be the JWs, obviously)
Another bunch of false assumptions. JWs are no more or less "hated in Jesus' name" than plenty of other Christian groups. They are indeed highly criticized by many, but as you've seen from many discussions on this board, often properly so. Have JWs really given "PROPER spiritual food at the right time"? Would you consider predicting Armageddon for 1914, 1918, 1920, 1925, 1941, 1975, 2000, and strongly hinting about several other years, to be doing that? Aren't such false predictions proof that, far from "keeping watch", they've been crying wolf? Note what Jesus, in Luke 21:8 said about those who make false predictions in his name: "See to it that you are not misled; for many will come in My name, saying, 'I am He,' and, 'The time is near ' Do not go after them." Do the JWs leaders claim to come in Jesus' name? The F&DS doctrine proves that they do. Do they preach that "the time is near"? You know they do, and they've been doing it for 120 years. So then, Jesus' words apply: "Do not go after them."
: "When Jesus said he would appoint this F&DS over all of his belongings, what do you think this means?" (We then discussed that it "should" mean the F&DS would be given more power/authority, ie: reigning as kings with Jesus in heaven)
Again a pile of uproven and disproven assumptions. Were JW leaders appointed in 1919? Obviously not.
: When I asked where this F&DS was between the death of the apostles (the original F&DS according to him), and when the JW's came into existence in the late 1800's, he said that the F&DS had always been in existence since the death of the apostles, but that it only needed to be "revealed" once the apostasy got bad and the last days were here because the F&DS's purpose was to give spiritual food at the proper time (last days).
A non-answer. It's all smoke and mirrors. You still have no idea -- and neither do the JWs -- who was supposed to be that F&DS during all that time. No matter what person or group one might propose, all of them fail the test that JWs apply. A 1971(?) Watchtower article claimed that one generation of "the slave" fed another, from the 1st century down to today. But C. T. Russell is the only person they can come up with who they say fits the bill in modern times. So just who "fed" Russell? JWs reject all of the possibilities. For example, Russell got the entire 1914 idea from one Nelson Barbour, a Second Adventist, whom the JWs now label an apostate.
: Some of what he said made sense (sigh), but I'm still not convinced that the JW have the F&DS. Basically it sounds like to me that the JW's GB decided that they had the F&DS because they were closest to doing Christ's teachings than anyone else.
That's about it. But as I've shown above, their claims are false. What they do is to try to convince people to accept this doctrine without proof. They expect people to be "like an ass" to be led by a halter (this is actually stated in a Watchtower article, believe it or not). People who'll be led like this are not thinking clearly, and that's exactly what JWs are looking for -- people just like themselves.
AlanF