Okay, let's compromise on at least once a week. But how often do women masturbate? Do they watch anything or look at some pictures? Do they orgasm and "squirt" everytime?
also, I think you're forgetting one important thing - while men's orgasm during sex is practically a given, it's not the same with women, so sometimes it's just more practical to take matters into their own hands
only the fact that society has started to use the term "friend" for no real relationship and that people no longer really have friends is making you not see that obviously
Man can just look at big booba or ass and coom in matter of minutes anytime anywhere, woman always needs "story" and "mood" or "emotions" and all that other gay shit. If masturbation and orgasming is just easier to access and achieve you naturally do it more often