I've never done any kind of "party drug" [1], and I think that party drugs have to be a requirement for me to enjoy something like that (at least for someone as awkward as me). Repetitive music that's so loud it hurts, not being able to talk to people, close contact to strangers of questionable hygiene; it's hard for me to even imagine how anyone could enjoy it.
I suspect that there are a lot of people like me who are finally being honest with themselves and acknowledging that they don't actually enjoy the entire club scene. Obviously if you like it, don't let me take it away from you, but one of the best parts of reaching age 30 for me was that no one expects or wants me to go to a club with them now.
[1] The only "recreational drugs" I've ever done are alcohol and caffeine, and I haven't had alcohol in quite awhile.