I'm going to play devil's advocate here a bit ----- check out this article from The Huffington Post.
A couple of points here:
The article talks about having spontaneous sex (and keeping the blinds closed). If you are (bioidentically) hormonally balanced, chances are your libido is healthy and this is great if it happens. If you are depleted of hormones, a whole different story. You are tired because you're hormonally imbalanced, and your sleep is likely disrupted by your lack of estrogen. If you're tired, you don't want sex, you want to sleep, or at least rest.
If you are hormonally balanced but your husband isn't, HE may be the one not wanting sex. Low testosterone causes fatigue, loss of libido, erectile problems. For a satisfying partner relationship, it needs to be satisfying for both partners!
Point number five in the article is very important----if you are not in a long term, monogamous relationship, absolutely protect yourself from sexually transmitted dieases. Just because you can no longer get pregnant doesn't mean you don't need a condom with a male partner.
Point number six struck me as odd ---- you'll have more time and energy to devote to your relationship. Not necessarily, see above about fatigue, loss of libido, etc if you are not hormonally balanced, and many of my friends who are about my age are not only dealing with children who are teens or in their 20s, but also dealing with aging parents. Some tell me they have never felt more overwhelmed in their lives!
Wishing you all great sexual health!