I am curious because I have seen graphs which show that (on average) women lose sexual interest in their partner much quicker than men lose sexual interest in their partner. I have also heard statistics that women initiate something like 80% of divorces and over 50% of total marriages end in divorce.

So it's clear that women get bored and fall out of love far easier than men do. I am curious to know the reasons why, if you can pinpoint any possible reasons. And do you really want one partner for life or do you prefer several partners over the course of your life, and why?