I have thought this for a while...that when you leave the org, it's as though a vaccuum needs to filled.
When i left i threw myself into politics, it was as if i needed something to do with my mind and thoughts. Now i was on my own, what do i do? This lasted about three years or so, but even now i drink more than perhaps i should, as though i can escape through drink. I also from time to time do drugs, cannabis, ecstasy, speed....nothing harder.
My best friend left about 3 years ago, he now is a total pothead, smokes to kingdom come (pardon the expression), it's hard to believe he's 34 and smokes like he does morning, noon and night. My brother left about 6 or 7 years ago, he obsessively throws himself into his work, unhealtherly so, he even missed out at the last minute a night for his 30'th birthday just because of work.
I have come to the conclusion that certain people need a crutch to get themselves through life, as some sort of escape. There is no doubt about it that the WTBTS screws you up, the org in itself was an escape from the real world, so do others find something to use as an escape, drugs, drink, politics, work, etc?