One thing to note, as someone over 45 (when did that happen?!!) is that your priorities change.
As a young man, sex is what you want. As a not quite so young man, I still like and want sex, but I'm just as happy with cuddles and a nap in the afternoon. It is more about intimacy that ejaculation. :-)
The other question to ask all those baby boomers that are unhappy about their sex lives, is why are they unhappy? Is it because they are having sex with a saggy 60 year old instead of a toned 19 year old?
Is it because it has gotten boring?
Is it because everyone else is having more and better sex than I am - all the magazines say it's so.
Maybe it's because sex has been elevated to such a position of importance that it's just too much effort to try and live up to the expectations.