Well the truth is I recently started a job at a high school and the female students mostly wear skirts, of them about half of them wear dark stockings and I just ¯_ (ツ) _/¯ I dunno I just wondered what they do but looking through the comments it totally makes sense that they’d add a layer of comfort particularly in colder months, when I realized I also wear a tight pair of thermal pants sometimes then it became clearer as well
Not that anyone has to justify wearing what they wear I was just slightly curious is all
I suppose also, there was likely a time before modern textiles when wearing a skirt that was durable enough for every day use could have been pretty uncomfortable