Everything varies so much from person to person, what someone considers sexy may be silly or even gross to someone else.
As erotic authors we have to take into account and respect all different types of sex and sexual styles. I personally didn't understand male on male stories until I read Jungle Fever by Sara Pierce. I have gay friends and absolutely no issue with it, I just didn't understand the pull until I read that, the sexy steamy scenes broadened my horizons and have encouraged me to consider writing a MM in the future.
The other thing to take into account is that the more types of stuff you have out there the broader your audience may become. That is not to say that Niche artists aren't going to make it, but in experimenting you may discover that your wildest fantasy really is a subject people love.
I hope you have a wonderful weekend!