There was an interview with a 107 year old lady who had been a JW since the age of 10 or so. Remembers seeing the "Photodrama of Creation" when it was still a thing, etc.
So she's explaining about herself & her husband witnessing thru the years, 1930's thru now.
She says at one point, her husband called on a guy who said something like "The last time I got a call from a JW, it was 50 years ago in xyz village by a guy on a bike who said Armageddon was coming soon."
The lady was just so tickled, because the guy on the bike was her husband, who happened to run into the same guy (who remembered him) 50 years later.
And I'm thinking "Wait a minute....her husband said 'Armageddon was coming soon' 50 years earlier...obviously he was completely wrong. Didn't you ever consider what a colossal waste that 50 years of preaching was? 50 years telling people 'Armageddon is coming soon'. Probably most if not virtually all of those people have died. Armageddon wasn't coming 'soon', it didn't come when you said it was going to. Why on earth would you think it is coming now?"
The irony: She was talking about what a "wonderful life" she has had, no regrets and all that....but really, there is nothing I can imagine that was a more complete and utter waste of time and effort than preaching for 80 years about an event that is supposed to come "soon" but never will.