I don't remember doing any of those things when I was a teenager. In fact, I deliberately stayed away from such things and I shut out people who were associated with them knowing that my life would somehow be a lot worse for it.
That was 14 years ago.
Looking back on it now, turns out I was right. Most of those people who I thought were my friends are pretty much going nowhere in life. They still party, smoke weed and god forbid if they have kids (some do unfortunately) they don't take care of them. In the end, I think I turned out pretty well. If staying away from drugs, booze, etc. early on in life equals the definition of a sheltered life, then I'd do it all over again in a heartbeat.
But, I sure was horny as hell.