Why do feet stink so?

The warm sweaty environment inside your shoes tend to grow bacteria and fungi, and these emit smelly substances either while alive or after they die.

Just remain barefoot. Foot smell comes from bacteria inside your shoes and socks. It's the moisture that lures bacteria inside your shoes.

Mine don't? It's called showering lol

Anything close to the ground gets smelly.

Because your feet have sweat glands which makes your feet stink