The prevailing theory remains that rape is about control/domination for most perpetrators. The best support for the notion is that most rapists actually have access to willing sexual partners and about half of rapes involved premeditated planning. Most studies have noted that rapists are skilled at rationalizing their behavior.So if someone wants to commit rape first and foremost, what does that amount to other than exerting power and control over a non consenting person?
One link noting some of the summed information: https://well.wvu.edu/articles/rape_myths_and_facts