What data we do have almost all relate to penetrative sexual acts, and the superficial contact of the anal ring with fingers or the tongue is even less well documented but may be assumed to be a common sexual activity for men of all sexual orientations. Some women like it and a lot of men are all about giving pleasure. It requires more trust and communication than regular sex, and oftentimes your SO is sacrificing some of their comfort and possibly dignity to give you pleasure. I like being in control, and fucking a woman in the ass is basically as submissive as you can have her. With its glans or body as a whole estimated to have around 8, sensory nerve endings,   the clitoris surrounds the vagina and urethra ,  and may have a similar connection with the anus. For example, besides the risk of HIV transmission being higher for anal intercourse than for vaginal intercourse,    the risk of injury to the woman during anal intercourse is significantly higher than the risk of injury to her during vaginal intercourse because of the durability of the vaginal tissues compared to the anal tissues. In other words, the last three decades taught us that anal sex should not be associated exclusively with male homosexuality. Why is anal penetration enjoyable to begin with? Also, I just love the way a woman looks with something penetrating her lovely asshole. Plus, when a woman is into it, the feedback of the pleasure she gets as well is mind-blowing. It also means no chance of babies either. Research has found that psychological factors can in fact be the primary contributors to the experience of pain during anal intercourse and that adequate communication between sexual partners can prevent it, countering the notion that pain is always inevitable during anal sex. In some people, ASA may cause autoimmune infertility. Different and still amazing. Anal is more about shaft stimulation than head stimulation so if makes for me at least and entirely different orgasm. An Encyclopedia states that "the inner third of the anal canal is less sensitive to touch than the outer two-thirds, but is more sensitive to pressure" and that "the rectum is a curved tube about eight or nine inches long and has the capacity, like the anus, to expand". It is the very first step towards a healthy and fulfilling sexual life.