Of course, the hardest one to argue with is a guy saying he's gay or not attracted to you. Even if he's just lying just to blow you off, these "not attracted to you" excuses can hardly be refuted.
However, the other categories of excuses such as "you deserve better" or "I want to be with you but I'm married" are the kinds of things guys usually tell a woman if all he wants is sex -- and it may be true but it doesn't make the situation hurt any less.
Oh, and then there's the brand of excuses offered by men who are "afraid of getting hurt," "not over my ex," or "just got out of a serious relationship." It's a miracle anyone finds the one these days with all these reasons not to be together that men give.
So what do women do about these breakup excuses?
Unless you're 100% convinced he's the one and it's destiny seriously, for your own good, go to a sperm bank or adopt if necessary but move on!
Oh, and don't ever waste your time bending over to compromise for him. When you do this, all it does is give him more power to trap you in a perpetual friends-with-benefits situation.
If he can get you to think all your relationship problems are "your fault," then he has already won. Don't give him the upper hand. Move on.