I wouldn't change anything, maybe add a few more to my past, if that were possible, but maybe not.
Each man I no longer have a sexual relationship with I feel a strong bond. I never see some anymore, and am friends (online as he lives out of state) with one. I'm comfortable with the number and the men themselves. It wasn't always the greatest sex, but I cared enough about the men to love them, if even for a short time. So, they'll always have a place in my heart.
I've only regretted saying no to one man. (The others I said no to, I'm damn glad I did say no to them!) but it may have changed the course of my life, so maybe it's better we didn't.