Ha ha, I'm sure you would! Early in our marriage, my wife asked me to fuck her in the ass. I'd only done that once before with my ex.
With my ex, I was dying to fuck her in the ass (some women have an ass that just calls out to us, and she did......) but she said no way, - I'd have to be ...... before I'd let you do that. Finally, one night after a party, she was wasted and did not protest when I got the vaseline out of our nightstand and inserted my finger deep in her anus. "Oh no," she said and I reminded her that she told me if she was ............"Oh God," was all she said as I was rolling her over onto her tummy. We had made no special preparations - it was a spur of the moment thing as I was beginning to realize I was about to get lucky. We didn't have a towel handy to clean up, no condom (to simplify cleanup, if you get my drift) - all I had was a little jar of vaseline. Soon enough, I was in her (I took her prone - face down on our bed) and I realized how much she was enjoying it. I was afraid she wouldn't like it and would make me stop). Once I got the head of my penis past her sphincter she started to work with me, and from there she was very vocal and directed how we did it until her orgasm took her.
Nowadays, I'm remarried and before we married, my soon-to-be wife asked me to fuck her ass as she was able orgasm much easier and faster that way. And she gave me a briefing on hygiene. I always thought I was a knowledgeable dude, but her expertise in that area surprised me but it made it possible for us to have anal as a regular part of sex - same for her BFs when she had them. I know that all I needed to do is get the head of my penis slightly past her sphincter and stroke a little bit and she will be into it and quickly cum. We used condoms though - to simply preparation and cleanup and enable me to penetrate her vagina afterwards without having to go shower. Hygiene is important!