It can feel good
Women enjoy anal sex because it feels amazing. It's a totally different sensation than regular sex. It's not her vagina, yet it's inside her. In other words, it’s a completely alien feeling that she isn’t used to, which makes it intriguing. Meanwhile, the rectum will just suck up your penis like a vacuum. Play with her clitoris too and you’ll really send her into the stratosphere. In fact, it’s even possible for women to have orgasms from anal sex.
Because anal sex is naughty
Almost every woman harbours a fantasy of being a “naughty girl.” There’s a reason people love school girl uniforms and handcuffs: It’s forbidden and, therefore, all the more delicious and tempting. Anal sex is something you can do in secret and nobody will ever know you were naughty except you and your girl -- which is part of the fun. Plus, there’s the bonding experience of doing something together for the first time, even if it’s just a first for one of you.