Why do some men want to have anal sex with women?

Read also:

• Why do some people hesitate to say 'I love you' even after their partners have said it first? How can one interpret this behavior from their loved ones?
• Why do trans people get so deeply offended when a stranger misgenders them, especially when it's a first encounter? I've been socially transitioned for 4 years and it just feels like a waste of energy to be so hurt by it.
• What do you think of the Quora group "It's Ok to Be White" for people who are proud of being white?
• Rangers' Zibanejad pens heartfelt goodbye to Kreider after trade - NHL.com
• Why is it that when the Democrats absolutely love everyone to be LGBTP, they don't even acknowledge that Barack Obama and his husband Big Mike are homosexual, and he is the first homosexual president of the USA?
• How do police officers feel about the fear they instill into criminals?
• There’s another leak on the ISS, but NASA is not saying much about it - Ars Technica
• Is it possible to permanently quit pornography?
• If gays can get married, why can't I marry my dog or a cheeseburger?
• What are the best ways to treat seasonal allergies?
• What is the best technique for inserting a tampon into one’s anus?
• Do crossdressers like wearing pantyliners and tampons in their butts?
• Fruits and Veggies Boost Sleep Quality - Neuroscience News
• Have anyone had an relationship of any kind with a spirit or demon, such as a succubus? If so, how was it?