The anus is a very sensitive part of the body, and depending on how a persons nerves are wired, can be very enjoyable. I had an ex that loved anal, she would ask for it every week or two, although once i learned a bit better I could initiate it like clockwork. As long as she had just had a shower before bed, I would rim her ass a little bit during 69 and that would always get her into the anal mood. Funny bit was after she dumped me for a guy with a bigger cock, she didnt enjoy it with him, so would sneak round to see me once a month for some anal fun, great fun until she got pregnant and never seen her again.