Most bullies pick on people they figure can't fight back and they try to get others to dislike them too so they will be more miserable than the bully who is antagonizing them.Why they want to make anyone else miserable is unknown except for envy. That person seems to be able to be content even under dire circumstances and they envy that. So they strike out at them in any way they can. These people are insecure themselves and try to make others feel less than they are in an effort to make themselves feel "better-than-you". There is no excuse for that so give them a wide berth. With "friends" like that you don't need any enemies.