Why do people commit crimes?

There could be thousands of reasons why people commit crimes so you can't really tell why they do it because there are different reasons for different people and different situations. For example, who kidnap probably do it because they were abondoned in their life and they have no one to care for them so they kidnap people to have someone in their life. also people could rob stores because of financial problems. Like I said there are thousands of reasons why people commit crimes but i know that some people do it because they enjoy the thrill of it.