>>82230671 (OP) I'm pretty sure foot fetishes only became a popular sexual fetish since the normalisation of humans wearing enclosed shoes, which depending where you are in the world, may have only been a thing for the last 300 or 400 hundred years.
Don't get me wrong, human beings have been wearing shoes for way longer than that. But it was normal for people to walk around barefoot going way back or to wear open sandal type shoes. So it was more normal seeing feet day to day, way back when.
Nowadays, most people wear enclosed shoes. Enclosed shoes only became popular to wear for the majority of the population in the last few hundred years. So we've grown accustom to not seeing feet.
So seeing a woman's feet now feels like seeing an intimate part of her body because it's normal for feet to be hidden under shoes all the time. Hence why foot fetishes are way more common now.