I understand where you are coming from. But don't let the anger that many of us feel (and I feel much of that anger is justified) color your opinions about 'all' ex-JWs.
Just like most JWs are trying to get other 'in' because that what the JW thinks is the best thing for a person, many ex-JWs are trying to get others 'out' because they think that is the best thing for that person. The difference? a) ex-JWs are not forced/coerced/guilted into doing this. They do it because they want to. b) ex-JWs are not serving a man/men's goals/ambitions, we don't turn in time, etc. and c) we don't require/ask that JWs 'join' anything, give money/time/whatever. We just try and present a different side of the religious story that the JW has been force feed for years.
As far as are ex-JWs happy, I think you will find that some are some are not, just like in the JWs, there are happy ones and depressed ones. I know for myself I have never felt better about myself, my family life, my wife and I are closer and stronger people now. But most people don't get onto boards and talk about how happy we are, we tend to focus on whatever problems we are facing. So that's one reason the overall 'tone' might make it seem many are just angry/bitter/etc - they may be angry about the things they suffered in the WTBTC, but that doesn't mean their entire lives are soured and ruined. It's a typical WTBTC teaching to make JWs feel like 'there is nothing outside the org' and 'all those who leave are sad, depressed, etc'. That's simply not true. I associate w/ more well-adjusted people now 'outside' the org than I EVER did inside. Yes, they all have their individual problems to face in life, but that's all part of what makes up being a human being.
Hope this helps, good luck in your journey of self-discovery. It's an interesting ride!