Well, your comments are a little jingoistic for me, though I understand what you mean. My wife is my best friend. I married my wife for a lot of different reasons, one of them, though, was that she was and is hot. I really don't have any problem looking at other woman because I have a healthy obsession with my wife. There is no other woman on earth that I would 1) rather talk to, 2) have children with, and 3) spend every waking day of the rest of my life making love to her.
Part of marriage is, as you so crudely put it, is "getting laid regularly". I agree that it isn't the primary function, but it should be a REGULAR.