I think both @mlroseplant and @Shyheels bring up what probably is the most important aspect of wearing high heels, and that is, the importance and long-term positive effects of wearing high heels; its about how they make you feel.
We live in such a negative downtrodden world where people dress how they feel. What so few people realize is that studies have shown numerous times that dressing up can help lift your mood and improve your self-assurance.
My wife and I almost always dress well, whether going out to eat, going to church, or even to work. Surprisingly it is other women that give my wife a hard time; the hairy eyeball, snide comments said in the bathroom so she can just overhear it, and downright vile words spoken to her, all because she dresses well and takes care of herself. For me, I don't hear those same things from other men, but am sure a lot of people think we dress up so that we feel we are "better than them". We don't. We just like to dress well because of how it makes us feel about ourselves.
But it is hard to quantify that. It is much easier to state that rolling dough in high heels is easier on my wife's back then to state how wearing high heels and making her feel more elegant produces a more self-esteem within her. But at times there can. Despite working as a blue collar worker in a powerplant, two days after deciding to dress well before going in and out of the plant and dressing into work clothes in the locker room, I was approached by management and asked to be the Safety Coordinator when the outgoing one retired. TWO DAYS!
So if it makes you feel good, whether wearing heels is something almost nobody sees or everyone does, it is going to give you better self-esteem and that will transpire into better overall health and well-being.