Howard this a mighty interesting post. Excellent! It reads like a novel, or a script for a softporn movie, not sure yet LOL. Somehow it is mind boggeling to read about a women wanting to "get it on" year after year in and even past a marrige, and simply having a very high sexdrive. For most this stops or at least slows down very much after the first one or two years in a relationship. I think you described it well, it is the perfect relationship until you arrive at the moment in time you want "something" more/deeper.
I swear, I often think I'm living in some alternate reality LOL.
Not sure why, but just about EVERY serious gf or wife wanted sex as much ( or more) then me.
Every time I hear other dudes complain their wife never wants sex, I shake my head.
To me, these douchebags are clueless when it comes to what turns females on.
Worse then that, they THINK they know LOL.
My ( current ) wife is in her 50's , menopause and still gets "hot to trot".
I hate to be a broken record, but not having kids has a LOT to do with it.
Once a wife becomes a mom, a man's sex life goes out the window ( 90% of the time).
They shift focus to the kids and lose the energy and desire to get busy.