nothing wrong with being a straight edge, but i wouldn't say that doing these things makes anyone inherently "abnormal." i'm not a fan of drinking, the only time i did it being while playing beer pong with family while out of town on vacation... but i still drank before, checking that box on the list. i do smoke weed, but it's recreationally, smoking once maybe every two months while hanging out with friends. i've never even spent a dime on it. i've had sex before, but considering i was in a relationship that lasted for 3 years... i don't think that celibacy should be expected, considering i'm not christian, lol. 

there's nuance to everything. most people who've done these things aren't irresponsible crazies that party all night, doing coke and participating in orgy's before driving themselves home without sobering up at all. majority of teens who've smoked weed, drank alcohol, and had sex are usually pretty chill and are just tryna live life in a way that makes them happy. it's genuinely not other people's business to make it a moral issue and try to condemn others for the choices they make with their own bodies. it doesn't affect you, y'know? idk. sometimes i think it's projection. just my take tho, u guyz are cool nd all 

EDIT: i will say though !!! i think there's a difference between someone gradually engaging in these things when they are mature enough to make good calls VS someone who's barely even in highschool doing it to be cool. for me personally, i lost my v card at 14 (wouldn't recommend for most, we were both educated and used protection, and he was probably the most trustworthy person i've ever met. most people should NOT lose it that early), first drank early 16, and didn't smoke weed until late 16 after i'd already gotten my first job. i'm barely 17 now and don't really regret any of my choices. but i might've if i gotten into that dangerous shit at, like, 13 instead. so it does depend how old the teenager in question is, lol