Why do lots of people like feet?

I was asked by a YouTuber why there are many people who like feet and this is what I replied to him:

From what I've read on the topic, it is because in our culture, our feet are covered most of the time and we don't see other people's feet very often. So only when you're intimate with someone, you get to see their feet. Also, because they're very ticklish, and tickles are a nice sensation that makes people laugh. In addition, they smell funny: whether you accept it or not, we humans are animals, and we respond to smells produced by others and it can cause arousal.

Hope this answered your question.

Kevin