How long before you liked it
I've bottomed less than 10 times; I much prefer to top.
Each time has more or less been the same experience as the first, a mix of pain and pleasure, which I chalk up to not bottoming (or using toys, engaging in anal play, etc.) consistently. So I can't say that I've ever come to like it in the sense that I would convert to being solely or even 50% a bottom. I only do it for guys that are 1) Bigger than me (both body & cock size), and more masculine than me. I'm a fitness buff and present masculine, so they have to be more "alpha" than me.
I will shamefully admit that several times were with random hookups and without protection. But there is indeed some weird/euphoric feeling as
@curtdude pointed out about letting a guy cum inside you, sweat and collapse on top of you, and then pull out with his cum still inside you. He has marked you with his DNA, literally leaving a part of himself inside you. For me, that experience is the "pinnacle" of sex.
I experienced it really only once in 2018, but as you can tell it has left a very strong impression on me. It was with the second guy I bottomed for, a fit, masculine 25 year old Black guy, 8 inches, and sex with him was so good that it made me realize why girls get crazy/obsessive over guys or put up with their BS. I
would become a full time bottom if he were my partner. I was only planning on giving him a blowjob but he kept taking off my clothes and positioning me for sex. Once he pushed inside of me (in missionary) and stroked a few times, he smirked and sarcastically said, "And you're a top, right?"
His strokes were very gentle, more along the lines of making love than simply pounding for the sake of pounding.