Why do people cheat?

The million dollar question....  WHY DO PEOPLE CHEAT?

There are numerous reasons why people cheat in a relationship. Here are a few

Unhappy -  If someone is unhappy in a relationship for whatever reason it will eventually lead to cheating.

Sexually Unsatisfied - If you can't satisfied your lover sexually in bed then they will probably seek satisfaction elsewhere.

Thrill -  Believe it or not some people just enjoy the thrill of being able to cheat and not getting caught.

New - Some people cheat because they want something new, something fresh, something they haven't had before. It sucks, but it's the truth.

Those are some of the reasons i can come up with. If you have any reasons from your personal experiences, please share them.