Please explain

I just dont see why some people mess with others emotions!!! Do they get their kicks off of it or what ??? Maybe because im not that way I dont see the thrill in it... or maybe its the fact I know that people have feelings *whether its here or in real life*. Is it an ego thing or what????? And if it is an ego thing wtf is wrong with men ???? I swear some people just need to grow up and relize you cant keep treating people like shit cuz karma is a real bitch and she takes no prisoners!