Odd probably dumb sex/body question....

So a male friend of mine just told me some girl sent him a pic of her booty hole. He said it was hairy. I’m like who purposely looks at someone’s booty hole and why would she send you a picture of her ass hole?? I’m too confused.

****there was a lot of debate going on about looking at someone’s butt hole.******

I know that during sex the anus can be seen depending on the position. But to say that your partner wants to look purposely at your booty hole just sounds wired. Then he just said he told the girl it was hairy and she should shave it. You guys I told him he was wild for even saying it. Lol. Honestly idk, I think it’s just weird and I don’t understand why would someone send a pic of her booty hole to someone, why and how would you shave the booty hole, and is this a normal thing for people to examine the asshole?? Please educate!