I've read (and seen plenty of anecdotal evidence) that men generally have a higher drive than women. Hence the old joke, "not tonight honey, I've got a headache".
Granted, there are some women that have higher drives, but by and large I think most men end up getting frustrated in Rs when it comes to the amount of sex.
In my M I was always the higher drive partner, except for the first couple of months of dating. Once she "had me", the sex quickly tapered off. At first, I wanted it every day, but would only get it maybe twice a week (this was especially annoying on the honeymoon). Then I started getting it once a week. Then twice a month. Then only once, when she was ovulating. That was the point where I threw in the towel on even trying - my self-confidence was completely destroyed. After that, it happened every 3 months, until BD. Looking back, I can see how this was the canary in the coal mine. The sex (and especially the woman's desire to have it) is true indicator of a R's health.
But if I go into a future R and lay out my twice-a-week expectation, I suspect I'll be a very lonely dude.
Me-47,XW-43 S13,S16 M:18 BD:4-23-17 W filed:7-17-17 (5 months of in-house separation hell) W moved out:1-6-18 D granted:2-15-18 Decree signed:3-29-18