Excellent article and very wise. I have to say, though, from watching a great many couples and having been in several long-term relationships myself it seems to me that the biggest contributor to diminishing sexual frequency isn’t work or children or physical ailments, though of course these all play a significant role; the biggest contributor seems to be unresolved resentments. It’s difficult to feel excited about having sex with a partner you’re blaming for something. I wish there was an easy answer to this problem (“learn to communicate” “learn to forgive” “focus on what matters” etc.) but as best as I can see, it’s a consequence of basic human nature.