Either way, it's the people involves, not the damn game. Arguements like this always sound too much like the people who cry that video games are too violent or slutty. No, in that case, you need to parent your own damn kids and quit being lazy.
I have several married guildies. One, barely has a relationship with their spouse, but that is mainly due to differing interests. Another, couple both play, but one only plays on occasion on the other's mule. Yet another, share an account. One person has a completely supportive mate.
Me, I have a gamer boyfriend.