I was going to reply that perhaps adults are only superficially no longer adolescents, they muzzle their feelings but deep inside they are just as insane as any pubescent, but then Erica covered me in her comment:
"Sturm und Drang" (a very well known term to me as a German) can happen at any time, not just during puberty, yes. With the young, it's just more noticeable, because they do more daring things than the old, who hardly throw themselves out of planes or jump off mountain cliffs, etc.
Don't you hate it when Erika is right 😁
Found this graph about suicide in the US and this one for suicide in the UK. In both countries, adolescents have the lowest rate of suicide. This doesn't mean they're not miserable. It just means they don't kill themselves.
Personally, it's a great relief to be an adult :)