This is a genuine question because it's one of the most common differences between both sexes. It is related to the concept of spontanuous sex for men vs responsive sex for women.

Even though it's not directly lethal (but still related to health), sexual excitation comes for men like hunger or thirst. This is the closest analogy I found for men. A lot of men are conplaining that some women don't dress properly making them horny but this is something a man can tame. It's just that sometimes sex drive comes out of nowhere. That's why a man is generally enthusiastic about sex.

For a big part of my life, I thought women where asexual. If I understand correctly, women having a responsive desire mean a woman can live her whole life without any sexual desire unless someone activate it.

The closest analogy I found was laughter: you can't laugth without a good joke (or a comical situation). It doesn't appear as a need but a nice to have. So having sex in a relationship is like having a good laugh with your partner. This will create positive emotions and a good memories together. That's why a woman needs a great settings to have sex in the same way people enjoy having a comedy club with a good performer to have a great night.

Is this analogy somewhat correct?