The kind of teenagers who wreck parks are miserable individuals beneath the loud, brash behaviour amongst their mates. Normal happy teenagers who feel safe and contented in their lives don't behave like that - sure, they are often obnoxious in their own teenager kind of way by grunting at their parents, or wanting to be alone all the time at home, headphones on; or leave cups around the house; putting off doing homework; rolling their eyes at the request to tidy their room etc. But actual vandalism? Of children's facilities? No. I believe that's caused by jealousy and unhappiness. Happy and secure teenagers just move on from the play park stage and onto the next stage of their lives quite happily, and leave the happy memories behind them no issues because they know there's just more happiness and security to come. Unhappy and desperately insecure teenagers struggle with this transition from child to young adulthood because it's ofteh the time they feel least secure and most anxious about the future.
Those play parks when they were children made them forget their shitty home lives for a bit and gave them some happiness in their lives, even if they were at the park on their own/friends, without parents, or if their parent was off smoking a fag somewhere staring into their phone ignoring all pleas of "look at me, mum".
Playparks, and other similar fun childish things they are past the age for, or feel not a part of anymore, kick sad young people in the face every time they go past. For them, the anger at the loss becomes overwhelming and the only way they know to try to overcome that feeling is by destroying it.
The question I have is, why do we have so many unhappy and disaffected teenagers compared to other countries?