Why do people cheat for no reason?

I mean on games where you don't stand to make any money and gain nothing, like the iPhone app words with friends. Why do people cheat? There's no gain? They are just cheating themselves…

They have ugly spouses.

Such is life

They have a desire to be above others. Or just enjoy cheating.

Sometimes people cheat to test if there's someone who will catch them, some did it out of habit, others do it to spite someone. But no matter what the motives are that act is dishonest and disrespectful and not worth the effort. If one cheats mostly they are not hurting others but themselves.

Because they can. (lack of character)

To give themselves the illusion of superiority.

People cheat when they think they will benefit in some way. When there seems not to be a reason, it is usually that winning, by any means, gives them a false sense of power. They seek this if they feel insecure. It is sad because ultimately, cheating always hurts someone.

Laziness.

Genetic basis for Violence

http://serendip.brynmawr.edu/bb/neuro/neuro04/web2/apatel.html

http://linkinghub.elsevier.com/retrieve/pii/S0193953X05703142?via=sd&cc=y

http://en.wikipedia.org/...aggression