Would you quit a high profile job if the FBI notified you they knew you were cheating on your spouse?

David Petraeus was notified by the FBI that they knew he had been cheating on his wife. They had been investigating the woman he was having an affair with.

Ok, he’s a military man and all, and the military has strange notions of honor, but still what does his sex life have to do with his job? The FBI knows, so it’s hard to imagine he can be blackmailed.

Still, he is the head of the CIA. Does this put him at risk, even if everyone knows? Could he be compromised? Is that why he quit? Or did he quit because of this strange notion that breaking a private vow somehow means he is unfit for public office? I don’t get it. How would something he does in his private life that is between him and his family affect his ability to do his work? Is he going to be spending all his time in therapy or something?

What do you think of all this?