^^I think it depends largely on one's culture. I had an attractive Hispanic secretary who had a prominent mustache. She told me that men lovvved it and told her how sexy it made her. She told me that she would never do a thing to it. She's telling me this as I'm heading out the door for a heavy duty electrolysis session because in my culture, a heavy mustache is considered freakish.
However, I've had a few boyfriends who were cool about it. They knew I had a hormonal imbalance and was going through electrolysis which meant I couldn't shave or wax. I had to cut my hair down between electrolysis sessions. One of them would actually cut the hair down for me because some of it was hard for me to reach on my neck. He actually was an asshole but he sometimes demonstrated redeeming qualities.