Based on what is commonly discussed in forums and articles about this topic, here are some of the reasons a person might start and then prefer anal sex over vaginal sex. These are often a combination of physical, psychological, and social factors.

Physical and Sensation-Based Reasons

• Tighter Sensation: For many men, the anal canal is naturally tighter than the vagina. This can lead to a feeling of greater friction and a more intense, “hugging” sensation during intercourse.
• Unique Stimulation: The different muscle structure and nerve endings in the anus and rectum can provide a unique type of stimulation that some find more pleasurable or “deeper” than vaginal sex.
• Visual Appeal: For some men, the buttocks and anus are a primary source of sexual attraction. This aesthetic preference can make anal sex more visually and physically arousing.
• Consistency: The tightness of the anus is generally consistent, whereas a vagina’s tightness can vary due to factors like arousal, childbirth, or age. For some men, this consistency is a key draw.

Psychological and Social Reasons

• Taboo and “Naughtiness”: Anal sex is still often considered a more taboo or “risky” activity, even in heterosexual relationships. For some, the act of doing something that is still considered “naughty” or outside the norm can be a powerful turn-on. It can feel like a private, rebellious act between partners.
• Intimacy and Trust: Since the anus is a more vulnerable and guarded part of the body, engaging in anal sex can be a profound act of trust and intimacy. For the partner receiving, it requires a great deal of surrender and trust, which can be a very powerful and arousing dynamic for the penetrating partner.
• Novelty and Exploration: For a couple that has been together for a while, anal sex can be a way to introduce a new form of exploration and excitement into their sex life. Once they’ve discovered a preference for it, it might become a primary activity.
• Control and Power Dynamics: In some cases, anal sex can be part of a dominance/submission dynamic, where the penetrating partner takes on a more dominant role. This is not always the case, but it can be an element for some people.
• Perceived “Simplicity”: Some may find it easier to focus on a single pleasure point without the need for clitoral or other forms of external stimulation that a partner might desire during vaginal sex. For some, this can make the act feel more straightforward or less “complicated.”

It’s important to note that a person’s sexual preferences are highly individual. What one man finds a turn-on, another may not, and preferences can also change over time.