I was bullied and maybe a bit of a bully too.
I can think of two boys who I said mean things to even though I knew what it felt like to be in that position. I don’t really know why I did it and I feel ashamed when I look back now.
There was also a girl who used to hang around with me and my friends. We didn’t bully her exactly but we did exclude her a bit. This was a couple of years after I had moved schools after being bullied and excluded.
Through Facebook I have also come into contact with people I remember not being very nice at school, who seem perfectly nice people now. And then there is one who was the ringleader at the school I left, and I’m not friends with her on Facebook but we have friends in common, and she seems every bit as vile now as she was then.
Ultimately I think there are a small number of people who are just genuinely a nasty piece of work - always were and always will be. And at the other end of the spectrum there are people who simply don’t have it in them to bully someone, either because they are always the victim or because they are one of those rare people who doesn’t have a mean bone in their body.
And then there is everyone else.
Everyone else is just trying to fit into the social pecking order and avoid being the one who gets bullied. Sometimes that means picking on or excluding someone else because you don’t want people higher up the pecking order to turn on you, or because someone is so far down the pecking order that being friends with them would be tantamount to social suicide.
Most people are mean to others at some point at school. But most people grow out of it, and once they’re adults they can choose who to be friends with, who to date, how much to interact with their colleagues, and so forth. And when you’re in an office every day, there will always be cliques and people who are closer to each other than others, but the range of ages and roles in any workplace (and the fact that you’re just there to earn money and can quit if you want) means that it’s not really necessary to be part of a social group. Never saying much beyond small talk to your colleagues and eating lunch alone at your desk every day doesn’t mark you out as a loner in the office the way it would at school.
School is basically just a massive, hormonal herding pen for hundreds of kids just desperately trying to fit in, and that’s why many of them do nasty things they wouldn’t dream of doing as adults.
The ones who still do it as adults are just arseholes, unfortunately.