1. There isnt universal one reason. Others have their own mental or social problems, some do it just for fun, others for power...
2. Its usually 1 vs group. The victims are most of the time weaker or unpopular people so they are easy target. Tbh what standing up do? You tell them to stop. They just laugh at you and continue harder. This depends on the country but in my country there arent working system that could actually punish bullies so we victims dont have much options than suffer. How many times ive been sitting in my teachers office only to come back tomorrow to see nothing changed
3. Well bullying is abusing mentally or physically or both. So why do rape victims think about the rape, why do home violence victim think about it... bullying is traumatic experiense. It destroys your mental healt, self esteem, relationships basically your life and it takes a long time to heal. It has took at least 10 for me to heal and get a 'normal' life and i still have work to do
4. I mean talk shit get hit. If you are ready to destroy someone else life be ready yours to be destroyed too. I think its fair (of course it depends on case by case). Too bad my bullies are flop so there are nothing to destroy. Some call it revenge some call it justice. Mots of the bullying cases dont get the closure and bullies walk away without consequences meanwhile victims are left with menthal health problems that may affect the rest of their lives.