Why do men like to have sex with a woman's ass?

Because it’s fun. That’s it. It’s enjoyable and feels good. It’s really not rocket science.

I now have a lover who is a passionate and enthusiastic fan of anal sex, and she has an ass that is…um, extraordinarily accommodating and a great deal of fun. So, for the first time in my life, I have a partner I actively enjoy giving anal sex to.^3

Why?

For those who were actually old enough to have experienced the 1970s and not for those who were born in the 70s. What were the pros and cons of that era?

The answer to basically any question of the form “why do $people like $sex_thing”^1 is “because it’s fun.”

3. Yes, this does mean I’ll do things during sex I don’t necessarily actively enjoy myself. I think one of the hallmarks of a good lover is willingness to do things that get your partner hot even if they don’t necessarily rev your motor.

2. Giving, anyway. I’ve always been a big fan of receiving, which is why almost all my lovers have been quite skilled with a strapon, and I even own a patent on a new type of strapon.

What kind of pleasure do gay men get from being bottom? The idea is very appealing to me but in practice it's quite painful.

Throughout my life, until just recently, I’ve had girlfriends who enjoy receiving anal sex, and I’ve always been willing to do it, though I’ve never been a huge fan; too much work for something I personally didn’t find particularly interesting.^2

1. Yes, I prefer underscore_notation to camelCase. It’s easier to read. Change my mind.