As another poster stated, providers have kept many marriages together - those marriages being the ones where it boils down to a horny/unappreciated/disrespected/ignored/bored husband...
Rinse and repeat.
I was talking to a gent today about this very thing. Our statistics weren't entirely accurate but, I told him that ALL my married clients wanted sexual release (1,500 sperm per second?!? No wonder,guys!) BUT!!! 80% of them crave respect, affection, affirmation, to feel like a woman's hero, and to KNOW they could share at least one sexual fantasy without a wife or gf recoiling or shooting him down.
I wish I could tell wives how many husbands long to tell their wives that. It is never a one partner dance
