What's so great about anal?

Can someone please tell me? I don't get it!

I've been gracious enough to allow an ex-bf (bf at the time) to go in the backdoor when I was on my period and feeling particularly generous. But I HONESTLY don't get what the allure is from a woman's point of view.

At first, it feels like your asshole is on fire and someone tried to kick you repeatedly to put it out.

Then it feels like you're taking a massive dump all over your bed or whatever surface you happen to be on.

I derived absolutely NO pleasure from it.

So are there any of my hOors out there who are also backdoor hOors? What do you see in it? How does it feel to you? I get why the guys would like it - it's tight as fuck (no pun intended).

But ladies?