From some of the things they've told me, it's because I'm funny/witty, intelligent, have a nice smile, dress well, charming, a good dancer and handsome. They also like that I'm a bit different from the average dude they've encountered as far as my interests and way of thinking, i.e. I'm a gentleman without being too "old fashioned." There's probably a lot of other innocuous factors I'm not aware of, too.