I have just privately messaged this to someone - but forgive my arrogance for repeating it here.
The child who is bullied remains bullied all of their life, no matter how well they do, how wealthy they become, how popular they are as adults. Inside - they are frightened child ad it doesn't take much to send them back there.
Kitkatiom's post wasn't the one I replied to - but it was the one that mad emo want to share it. Unless you have been bullied - physically, psychologically - however - you have NO IDEA how dreadful it is, and how long-lasting the effects.
I'm 65. I had a very unhappy childhood and home life, and was also bullied horribly at school. I had no escape. It is only recently that I stopped having nightmares, and stopped flinching if someone suddenly raised their hand to (say) stop a bus. It's horrible. I suffer dreadful depression and suicidal thoughts (though these have lessened, and there is no doubt, as others have also stated, that I have never achieved my potential.
I'm lucky - I have a very supportive husband and he has helped enormously - but even so, I am easily depressed and often feel that I'm not as good as others - intellectually I know I'm as good as the next person - emotionally I feel I'm shit.
Bullying leaves people depressed and emotionally very vulnerable. It is a lifelong feeling. Some people are fortunate enough to overcome it, but I personally believe that for most it is a lifelong struggle to maintain a healthy opinion of ourselves.
And I don't for a moment blame anyone who watches their bully fall over and break both their legs saying "Serves you right, you twat!" I can think of some people I would be delighted to see this happen to (though I couldn't wish ill on their children or pets)