First thanks for being brave enough to post this.
It surprised me how deeply rooted in ancient history foot fetishism was and I was also surprised to learn that there are over 7000 nerve endings in each foot and I believe that foot sex helps stimulate those nerve endings.
I did not, you will note, say it was wrong.
I think it is going to look different for different couples.
She made me so hard as I felt her hot pink toes rub my thumping cock.
Of course, not everyone will give, but what is local news worth yo you? Is this something you need to explore? In this case, I see a deepening of intimacy, with neither spouse sacrificing pleasure for the other.