If you don’t know the answer to this question (at least the latter), then you’re just not paying attention.
I had anal sex for the first time when I was 18. Then I was in a long relationship without anal sex for some 10 years and now I’m again in a situation where we have anal play in the relationship. It’s not something we do all the time though. My baby get’s the best orgasms from anal sex.
And yes, it’s the biggest turn on in porn for me.