Why do the armpits of girls look so hot ll Armpits Lover ll

Why do the armpits of girls look so hot?

To me, they are kind of like feet soles and navels:

They are body parts that aren’t shown most of the time.
They can be kinda dirty or smelly.
They are interesting and fun to observe, because they offer some variations: feet can be more arched or more flat, navels can be innies or outies, the colors and folds in each armpit are different, etc.
Showing them is associated wtih wearing few clothes (with a bikini or a crop trop, all of them could be exposed).

And so on.

A female armpit can also give you information about stuff that you could find sexy. For instance, is she taking care of her looks by shaving, or she’s more “spontaneous” and isn’t?

No it's not a mental illness it's quite natural. Most of the men love to see women's armpit, even I love to see women's armpit it drives me crazy. I am really addicted to watch women's armpit. When I see girls wearing sleeveless tshirts or women wearing sleeveless blouse I get hard. While I was in school there used to be a teacher who would wear sleeveless blouse and come to school, actually she was from Orissa. She was beautiful, I was really addicted to her armpits, that was time I started to love women's armpits.