Bullies bully because all they want is to feel comfortable about their rough time life, and wish to bring others to feel worse then they do so they can feel happy.
Bullies abuse because they feel as though you don't understand that they are not happy, and instead of explaining and taking the time to say how they feel, they go to the extreme by abusing you, just to show you that they not happy, and that they need something ( or need you to do something ) to make them feel better about their life, such as crying for them, simply picking something up, looking at something, or worse.
Bullies force people to do things that they say will benefit them because they do not understand how to beg for forgiveness properly. They do not understand that forcing others, no matter what it is, makes people upset, scared, and feel worse than they were before, or they don't even care how you feel, as long as you say what they want you to say, like " I forgive you " just so that they can tell you that you told them that your ok with what they forcing you to do because you " forgave them ". They don't understand that money ( or anything ) will never change what you have done to someone's soul.
Bullies embarrass others just for their entertainment. They don't care about your feelings, they only care about themselves, and how they feel.
Bullies make fun of others because they want to find ways to make you feel bad about yourself in any way they can. They want you to respond in a bad way so that they can laugh and feel happy seeing you get in trouble for something that they started.
Bullies do what they do because they only care about how they feel, and some can never change the way they are. In time, they will get whats coming to them, what you give is what you get. If you cause fear to others, in time it will be you who are in fear of others. Bullies may never understand, but in time, they will see one way or another ( like looking back at their life before " the end " ).