I had a good buddy in college like this. Kind of a weird dude anyway but he was super conservative Christian. We had a ton of debates about morality and where it comes from where his view was that if he didn't believe in god, he'd do whatever he wanted because nothing was stopping him. Well, turns out by a couple years later he didn't believe in god anymore for whatever reason and pretty much right away became a full blown alcoholic, did drugs etc (just weed and occasional psychedelics ... nothing serious like heroin). He eventually had a kind of breakdown after getting fired from his first job and moved back home for a while and now doesn't touch any alcohol.
Basing morality and a responsible path in life on a religion is pretty fragile in today's society, i.e. a society of information where one can easily conclude that religions are all made up feel good storybooks originally used for control of the plebes. Then once that conclusion is made by a one time Christian they have nothing real to base morality or responsibility on that the rest of us do, so get sucked into depravity.
Its not just today. Religion has always had serious issues with that.
I wouldn't call it "feel good storybooks", and in fact I think its the explicit forceful manner in which religion pushes the condemnation/damnation aspect that is the real problem. Instead of teaching they try to intimidate and use fear for force adherence.
When you tell people for basically all of their developing life that this religious path is the only true good and righteous path, and then they find out how bullshit it is, they then lose their ability to discern good and bad decisions.
And our politicians pushing their religious beliefs as political agenda further muddies things, as they use similar methods for teaching about sex, drugs, and many other things. Once you can see through their bullshit, if you don't have a decent knowledge of things, you can easily get duped into viewing things as non-harmless.
I'm saying, they aren't going to clubs. Most of those people in their 20s are clubbing on the weekends and have normal jobs during the week. By the time they hit 30 they are having kids and not going out at night, at all.
Heroin is not a part of "club culture." Heroin is "sit at home and do nothing" culture. Junkies spend all their money on heroin, not club entry fees.
Yeah heroin junkies are not generally club kids. That's not to say that club kids don't end up as heroin junkies, but the vast majority don't. Hell, I'd even say most heroin junkies get turned onto it from things that are definitely not club scene, especially these days where a lot of it is coming from prescription painkiller problems.
Much like how most binge drinking dipshit college kids end up being semi-productive members of society as they mature, club kids is generally just a phase.
And again, since I know it will have to be explicitly said for some people, sure there is some overlap, and the harder drugs do show up in the club scene (cocaine would be the major one, but I think even it is way down in use in the club scene compared to say the 70s and 80s, it seems more like an "afterparty" type of drug). The club scene (in general) drugs are generally just temporary "experiment" that people grow out of in their late 20s early 30s. That isn't to say there isn't any danger in the club scene drugs (there is). Same with weed, its generally fine for most people (as in won't typically cause long lasting harm), but there's definitely some hazards.
Opiates and meth that are ravaging entire communities is a far bigger problem than club scene shit.