Done anal a few times, tbqh the only real appeal of it for me was the 'girl is doing something unpleasant for your sexual gratification'. Done it once with the wife several years ago when we were on coke, I basically just shoved it in there. Expected her to be upset the next morning but if anything she was more affectionate than normal, but has put the kibosh on it happening again. Which is fine, been there done that, normal sex is nicer. One time did it with an ex and didn't wash until the next day and got a nasty bacterial infection on the penis, itched like crazy for ages, wouldn't recommend it.