I think that armpits (or oxters) are not the most beautiful part of the body, being dark skinned and wrinkly and are, therefore, best covered up. I only bare mine for swimming but keep my arms down until safely in the water. I cannot understand why anyone, when glamorously dressed up, would want to flaunt their arm pits by waving their arms above their head. Completely destroys the 'perfect' image they have worked hard to create. Great tufts of straight dark hair is decidedly Yucky, whereas a little puff of blonde or ginger curls can be quite attractive and certainly looks better than stubble.
Again, each to their own. This is probably the only time in the last 40 years when I have given a moment's thought to armpits
PS: I realise that there is a similarly hairy, dark & wrinkly area elsewhere on the female body. I have never considered that to be beautiful either but know that, thankfully, most males and some women would disagree.