Wow, this is a very easy question for me to answer. My craving and desire to submit to a woman come solely from the relationship with my mother.
There were the enema and suppository insertions as a child, including the lingering insertion of her lubricated finger inside me. Telling me to squeeze her finger with my anus and rewarding me with praise for being such a good, obedient boy for complying. She occasionally bathed me until I was 8 or 9, and with her soapy hands she never missed any spots.
I think it's mostly the humiliation of forced nudity that she imposed on me. My body had no secrets from her when I was growing up, even into my teen years. Spankings always required I be fully nude, bent over the bet, and made to hold/cover my own testicles with my hand so she wouldn't hit them with the belt.
On several occasions she was bothered that my pubic hair was on the toilet, in the shower, or in my underwear so she shaved me. Most of my teen years I was hairless around my genitals, my anus, and my underarms because my mom shaved them periodically. It was a very humiliating, submissive role to be forced by my mother to allow her to shave me. Of course, I didn't apply the lotion afterwards to the areas that were shaved - she did. When I became erect, she would tell me (again) that I was such a good boy for showing off for mom.
Or if my underwear had stains in them, she would tell me I wasn't wiping well enough and would force me to drop my pants and spread my buttocks for her to "inspect" my cleanliness. That didn't ALWAYS happen, though, but when it did it was absolutely humiliating.
So much, much more...
I still crave, CRAVE this type of control by a woman today. My wife is also very submissive, so it is a big hole in my sexual identity that goes totally unfulfilled.