It's interesting to me that your Dad was a complainer with a short temper and you were unpopular in school. That's my upbringing too. I share your low empathy trait, although that's something I'm actively working to improve as I get older.
However, unlike you I couldn't classify myself as a social enforcer.
My Dad was the guy who would call someone out who cut in the queue, or approach somebody who's hogging all the things that he feels should be shared fairly in a social environment, be that the bowling balls in a bowling alley or whatever.
He would ask for things in a restaurant that they weren't capable of providing. One example in recent years was that they forgot to include the tomatoes in his full English breakfast. Rather than accept that the tomatoes would be there in a minute, he asked for a refund on the tomatoes. He wasn't kidding, and made the waitress awkwardly explain it wasn't policy to do that.
He'd ask for discounts on EVERYTHING, no holds barred, everything was up for negotiation. He was a salesman after all...
My Dad was one of 7 kids in a small house in East London. So he learned the hard way to make people respect his wishes.
As such - I endured 100s of toe curling experiences like these between the ages of 6 and 16. Most of them I've managed to block out but as a collective they all still haunt me.
I'm super assertive at work, I'm a Managing Director for a twenty person strong software company so that's no issue.
However, in a social environment it's unlikely I'll call somebody out on queue cutting and I'll go out of my way to be kind and polite to waiting staff in restaurants. Having endured that in my youth I now find those circumstances completely unbearable.