Why in hot weather, women basically wear skirts, shorts and the like, while men wear pants?

Once upon a time, in summer, most men were shirtless, with big underpants and barefoot slippers. Most women wear dresses, socks and sandals.

Now in summer, men should wear vests, trousers, socks and sandals at worst. Women are the most conservative, that is, suspenders, long trousers and barefoot dragging.

The above comparison shows that with the progress of society, the quality of men has improved and women have become more and more gorgeous.