Men only require women to be present, and in most cases, willing. Although, we all know that rape statistics are vastly overhyped.
Back to the subject though. When men require sex they simply need a woman to open her legs and then the man proceeds to fuck her. To get off he just needs to stimulate himself, the woman doesn't need to anything, and in 99% of cases, the woman does nothing during sexual intercourse anyway, as it is women who require "deeper needs" or some shit like that. For a guy to get off, he needs to shove his dick in a hole, most likely a vagina.
For a woman, she needs the guy to all kinds of silly shit. And we all wonder why men rape? It's fucking human nature to rape! Although, the word rape is used negatively these days, which is bullshit. Back in the day women loved being raped, it was the only worth they had, where as these days rape is a crime.
The bottom line is that men just need to get off, the woman is irrelevant. Men do not require women for any kind of stimulation, be it intellectual, or physical. The mere fact is that men only hang around women incase they do need to get off and fuck them. They are just tools. Men could happily jump around from woman to woman, and most often do anyway (forget your special "relationship" you fucking silly bitches, your man is cheating).
Women however require some kind of deeper need, such as being "loved" or "wanted", but this is very hard to acquire, as most men will never truly love a woman, or want to be with one, as she is simply there to open her legs when required and nothing else. Women KNOW they are worthless in this respect and is why they chase that deeper need. People always chase what they can not have. This is the main reason for divorce rates. The man wants to do the natural thing, and does, and the woman gets bitchy, finds another man who can satisfy her needs, then he'll go off and sleep with somebody else, and the woman files for divorce again. Women KNOW it is inevitable, men TRY to be as faithful as they can be (never going to happen) and ultimately women make money through this kind of transaction.