Am I asexual, or do I just not like men?

I am 31F, and have never been in a long term relationship. Have dated a bunch, only men. I have never felt attracted to anyone, male or female. Never had a crush. The one time I tried having sex with a guy, I couldn't do it and kept thinking how gross/boring it was. I don't even like kissing. I feel a strong desire for intimacy/connection with people, but I think I like the idea of connection more than actually doing it.

I have never tried dating women, mostly because I have also never felt attracted to them, either. But part of me thinks that in order to "prove" to myself that I'm ace, I should try dating women? Has anyone done this? Also confused since I do masturbate and can orgasm, but what mostly gets me off is thinking about someone (doesn't matter who) performing medical exams on me. So I'm mostly thinking of my own body when I masturbate.