Why do men cheat?

So why they do it? why do they cheat? does that mean they are not contented with their girlfriend? and why society sometimes just accept it easier if the man cheated? so what are the reasons that make cheating excusable? is that really normal that a guy cheat?

i think sometimes we don't have to blame all men for being a cheater because sometimes theres also a reason why they actually do that its because maybe their partners are not giving their guys a good attention or maybe of some other reasons also we don't know but i think that are common situation that may cause the guy to cheat his girlfriend or even his wife. yet there are still guys that is true and honest

i think men have the nature to cheat. they always do even though they are not aware that they are already doing it. Men, in general are born to be polygamous. it's just up to them on how to avoid or control it. evil:evil:

lets widen our mind not only men do cheating. also girls do it. yup you're right why do they cheat? maybe because they want more and more and maybe they find it exciting. you know what i hate those people who cheat.