This forum has a lot of athiests, but many JWs become Christians and there are exJW Christian forums.
Many exJW's do self destruct. Two friends I grew up with suicided after being d/f and a third tried several times. That being said, I am in touch with many x'jws, and after 5 years or so most seem to be very successfully on with there new lives, generally far more happy and successful that whilst JW's.
I personally feel so relieved . Jesus said take his yoke because it is kindly and light. Leaving the WTS certainly was huge weight off my shoulders. Despite all the problems that it causes and the future uncertainty I wake up every morning thankful for life and the strength I finally had to move on.