Because I've always been known for "packin'", older men (from 1 year to 40 years) would seek me out and line me up for a hook up after work. That was when I tended bar in the Castro during the 70s. Then I had an affair with a older gentleman with whom I seriously fell in love. He couldn't imagine me ever fucking him. Fortunately, he knew how to fuck and I usually came by rubbing my dick all over his chest as he fucked me. It was OK, but not completely satisfying. That's when I realized being a bottom or a top was sort of a political game among gay men. Everyone wanted to top, but once they got their hands down my pants it was obvious they preferred having me plow them senseless.
Then I met a semi-famous porn star who started out in San Francisco. Tall, goofy, handsome, deep voice, nice dick (though much smaller than me) and for about two months we became a serious item. He'd fuck me and then insist I fuck him. He could swallow my dick down his throat and keep it there for several minutes. We would often 69 working to cum at the same time then, with our mouths full of each other's load we'd suck face and swap cum until we were exhausted. He was also exactly on the same wave length as me when it cam to engaging one, two, three or more people in a group grope. He was a great guy and helped me realize those who think they should always be the top or bottom because of the size of their dick were missing out on a lot.
Some of the best love-making The Squeeze and I enjoy is when we sixty-nine while we both have someone sliding their dick up our ass at the same time. Doesn't happen all the time, but it's easy to arrange when we're in the mood. In addition, if The Squeeze is feeling particularly macho (usually Saturday mornings) I have no problem encouraging him to slip his beautiful cock up my ass and fuck me as I remain in semi-sleeping state. As for me fucking him, he's still up to it but he's getting older and I'm afraid of causing him to develop hemorrhoids.
Fortunately for me, I'm as big an asshole as my ass is. :biggrin1: