My own experiences are informed by spending a bit of time in both roles, neither of which were particularly enjoyable for me.
Fate-wise, I like to think I'm karma-neutral.
(I coined that phrase, so it's to be credited to ME, right? Any of you wimpy writers out there try and steal it for yourself and I'll see you in the car-park at the end of school, got it?)
If it's any consolation, I'm trying to teach my progeny not to bully, but also not to take any crap from anyone.
Interestingly, two of the bullies I knew from school-age days have also removed themselves from this life.
There's gotta be something in that theory.