Answer:
There are possible reasons why kids who bully might think it's acceptable:
Some kids who bully believe that it's a way to secure their power and dominance over others. They may feel that they are more powerful or popular than their victim and that bullying is a way to maintain that status. Bullies may bully because they have learned from their parents or others that demonstrate aggression and violence are acceptable ways to deal with conflict. They may haven't been shown how to communicate or have conflict-resolution skills. Others also may be seeking attention or validation from people around them, and they believe that bullying is a way to achieve this. They may not realize the harm they are causing to others.