Situations differ from person to person, withoutv getting into details, I left because I grew spiritually stagnant, and for the last two years with the WItnesses had literally been studying the scriptures with another group that were more in line with my beliefs.
I had no immdiate family members who were witnesses, but I was married, fortunately my wife shared my beliefs. But we did live with my mother-in-law, who eventually threw us out of the house. We were content with becoming inactive and fading away, she made it more difficult, and because of it, she lives alone and miserable, while we live 50 miles away.
I stepped down, became inactive and when we moved we faded away, that was over ten years ago in that time, we had our ups and down, but the Lord saw us through it. We have a 6 1/2 year old daughter, and we're expecting our son in November [We were expecting twins, [a girl AND a boy] but the girl had a heart problem and four months into the pregnancy, her heart stopped and she died.]
I still live a JW type life, that is, I go to work and go to church, but without the strain. I get to spend time with my family, go on vacation, or long weekends without having to worry about the meetings or having to answer to others why I'm missing meetings to go away and do "worldly" things.
I still live a decent life, and worship God the best I can, I have friends I can count on, I've renewed old pre-Watchtower friendships, and made new ones.
I think the problem arises when we just throw the baby out with the bathwater, and decide we need to catch up on what we missed out on. I think for many if not most, those days or partying and having a good time is past, there comes a time when you grow up and settle down.
Some of us have left the Society much later in life and decide to catch up, I think it's silly to see 30, 40 and 50 year olds trying to catch up to the youth lost.
So is their Life After the 'Tower, sure, I think so!