Why are they angry?

Sometimes they have wondered why women are upset that their partner plays many video games?
It intrigues me that since I have a friend to whom his wife left him alone because he played online with our group of friends, does it really bother them? or prefer to be in bars or night clubs sometimes with women after women.
I have another friend who only plays when his girlfriend gives him "permission" or when he goes on a trip, another to which his wife serves dinner while he plays, and of course I'm the bachelor.