Here's a little gem you might find interesting, it's a fun book that deals with some bible verses called Atheists Book of Bible Stories. Take a look and have a read, once you start reading you won't be able to stop, totally funny and eye opener.
Now, your first problem is that you imagine that watchtower somehow had anything to do with Jehovah. If you investigate them, you will be amazed by their deception from altering dates and ways they arrive at these dates. You'll be amazed about many scandals that they managed to hide from their followers and from us when we were in - until many of us realized we were duped. Take a look at jwfact.com for detailed list of eye rolling crap that they pulled on their followers.
Preaching is only to keep you busy and away from thinking straight. As long as you're busy, you won't have time to question watchtower's stupid teachings like overlapping generation. You won't ask why downsizing is taking place and why anointed number is growing and not getting any smaller while the end is so much nearer and yet no end in sight.
Start your research into watchtower and come to your conclusions. If you like, research the bible itself and the stories in it and come to your conclusions. Many have done so and come to conclusions that the bible has some historical facts included with myths and how can one support it as being infallible word of god? If you look up Jehovah, you'll find some interesting things that it appears the name came from Canaanites who the Jews originally were.
Once you rid of yourself of the fear of Armageddon and imaginary bullshit that watchtower put in your head, you'll be able to look at the world in a different light without superstitious fear. Life is short, so start living it and enjoy it as there doesn't appear to be a pot of gold at the end of the rainbow.