I was a happy kid generally. School messed me up and some other spin-off things around that, but I still managed to grow up into something...something umm...well, just me I guess. I think I became who I am because of those things and others and I'd not change it.
Human beings are disgusting creatures generally, with a few exceptions, or at least humans have the propensity to be that way...the weak among us give in to that and become their base self. I've dealt with a few such people and handed them their comeuppance.
I wouldn't go back to school.... a lot of people say: what happy school days, how could I go back to that time and I say nooooo, no way!
Yes, human beings are cruel, most of them, although I have found good people along the way and I am grateful for that... the others, let them get what they gave, because life is a two-way street.
I'm glad you gave some of them what they deserved!