Wow that’s quite a generalization! ds, has that been your experience?
I suppose it all depends on what you call a “good percentage”. Probably a slightly higher percentage of the guys I’ve gamed with wound up gay than the general population, which I suppose makes it a “good percentage” but really not more than 4 or 5 percent. As for the satan worship, during the height of the idiot cry that D&D was satanic a LOT of us faked it, but no more of them were really into abnormal religions than any other group, and most of the oddball were wiccans not satanist. Screwing with the norms is a time honored tradition among “outcast” groups, whether the group is outlaw bikers, gamers, SCA, or metal heads making people who clearly already don’t like them uncomfortable is a time honored past time.
Now for the convention front. Yeah, there’s always that cluster of the really hard core screwed up people at the cons. Whether it’s the 300 pounders that only bathe when caught out in the rain, or the sexual deviants who have found that a crowd of people that have a hard time getting laid in the first place tends to be fairly “willing”. Evil though, not so much, and it’s really only about 10% that have “issues” of some form or another. Weird to be sure, but again you gotta remember it’s outcast groups now in a situation where they’re in charge, the out number the norms, and most of the norms work for the hotel and are therefore being paid to make the outcasts happy (within reason of course). It’s a situation where people, as Jimi Hendrix said, let their freak flag fly. To the uninitiated, even for the uninitiated that’s arguable a member of the group, it can be a bit scary the first time. But much like the infamous Black Hole at Raiders games out in the regular world they’re actually regular people who just get together periodically and turn the social filters off.