had a gf back in the '80's who only did anal and loved it more than anything else.
was just discussing this with a female friend today who told me that she knows a few women who cannot orgasm without anal. I told her that maybe, like a guy, that is the fastest path to the G-Spot. This woman is quite experienced and told me that is true because a woman's G-Spot is not always in the same place explaining why some women don't find it.
Sexual response is a curious thing!