Jumping on tristero's comments, I'm tired of people excusing all sorts of unethical, despicable behavior from people just because the criminal in question is faithful* to his wife.
Really, though, that's why people like Senator Ensign granstand about their marriages and other ways they're being sexually moral. It's an easy way in this culture to establish one's moral credentials without messing around with inconvenient things like acting ethically toward one's business associates, employees or constituents.
*Speaking of being faithful, the vows my wife and I made to one another on our wedding day were long on honor, love and respect and pretty short on the whole "I won't have sex with interns or my secretary" thing. Honestly, ISTM that not having sex wtih other people is just about the easiest part of marriage. Again, that's probably why people like Ensign pay so much attention to that aspect, and why they so often end up failing to meet even that standard.
