It's easy to become disillusioned with all of the schmoe stuff, drug abuse, backstabbing, etc. I don't know any other activity that's got such a fucked up scene outside of hardcore drug addicts.
I'm not as obsessed anymore but I still enjoy training as much as ever. I think most people usually wake up from the dream. I mostly loathe bodybuilding but I still like to look good and chit chat about it all bitterly lol