I was working...and a night shift on a sunday no less!!!
I think the comments about privilege being an extra not a necessity of having an exciting sex life past 50 are very true. I think one of the lessons learned with age is to focus on one's own pleasure and less on what anyone else may or may not be doing. after years of wonderful experimentation, one's own particular fetishes and turn on's become comfortable and ingrained.
I don't think it's true that women become more sexual as they age, I think young women who enjoy sex become older women who STILL enjoy sex! They just learn more about their bodies, their responses and gain confidence.
Of course I think it's worth saying that this applies to women who are now in middle age...meaning raised in the 50's-70's. It will be different discussion when today's young women reach middle age, I would guess they may have different issues...