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

Read also:

• My girlfriend told me that she wants to move in with me. I have my own apartment and I like my peace and quiet, but I also love her. We've been together for a year now. What should I do?
• What's a band that is really popular that you don't like? Why?
• I was awaken between 2-3am by a voice that said “Hey”. Literally right next to my ear. Sounded like a males voice, but it wasn’t stern or deep. What could this mean?
• Why does Russia and many parts of Eastern Europe strangely have a high percentage of female doctors and physicians (~70%)?
• Do any members of BTS have significant others in real life? If so, why do they choose not to discuss it publicly?
• What is the sum of X+XX+XXX+XXXX?
• Why cant I ever fall asleep with my boyfriend?
• How can I move on from my ex?
• Why would a girl not want you to know she has a crush on you?
• Why is pure dopamine not a recreational drug? And if it was wouldn’t it be the most addictive and fairly side effect free?
• Do crossdressers like wearing pantyliners and tampons in their butts?
• What do you think about me (Aditya Krishna)?