I believe there are several years worth of extensive studies on the subject of male vs. female sex drive, so if you are interested - I can highly recommend reading blog of a sex-educator Emily Nagoski (she calls herself a "sex nerd" - really fitting when you read some of her posts)Avistew said:It seems to be true in many cases, whether it's because females risk more (females are usually physically weaker than males, making violence easier against them, and pregnancy is a risk too. And of course receiving partners are more at risk for STDs on top of that), because of social-related reluctance (read, they don't want to be called a slut and not be considered marriage material as a result) or because women have less libido on average (I wouldn't know, I don't have sex with them, so I only have myself to base an opinion on, and an average can't be based on a single person).
Also it's harder to have sex in the bathroom when you're not both allowed in the same bathroom.
A "back of the envelope" summary would be that women biologically have a more complex system that defines sex drive than men (dear feminists - not "better", not "worse". "More complex" as in "more STUFF happening inside the body to determine if it's "on" or not") The way Emily describes it - female "sex drive car" has a more sensitive break pedal, while male "sex drive car" has a more sensitive gas pedal. So regardless of the engines in these cars, male one tends to have a faster start than the female one.
Just wanted to elaborate a bit, in case anyone's interested in that kind of thing.