The orgasm gap, or pleasure gap, is a social phenomenon referring to the general disparity between heterosexual men and women in terms of sexual satisfaction —more specifically, the unequal frequency in achievement of orgasm during sexual encounters.

Is this the case for all sex or just casual sex? For (unmarried) relationships I would think a lack of sexual satisfaction would be a deal breaker

The definition equates sexual satisfaction to achievement of orgasm, but is this necessarily the case? Do women enjoy sex even when they don't orgasm?

Why does this gap exist? Are men responsible for this gap or is it just biology?

Should men be expected to put more effort into sex (compared to women) because of this gap?