Fascinating topic and questions, bud. I was a Top for the greater part of my life, yet always knew I was submissive, not Dom. Then at 50 I had prostate cancer and despite successful treatments "things changed" over time. And I had a new partner, who had I'd only had a large hard cock with. One day at our then house in the desert he decided he was going to fuck me (outdoors where we had the best ever sex), but I "couldn't take it". Finally he said, "Well if you're going to scream like that forget it." Somehow then and there I, and my hole, relented and let him mount me. From thereon it was bliss. I've never looked back and even though we're no longer together I thank him for showing me my true role and calling which is to accept and receive cocks. Being "older" now (60's) I may not be prime material but am a hungry hog for breeding. Not sure that I've contributed much to answering your question, but.... 😉