To quote Mrs CTL…..
You can wear Polyester and schvitz or natural fibers and be cool.
If you want a wig, you want the comfort of Human hair.
A stay at home housefrau might wear a scarf on her head, but women who also have a profession outside the immediate frum neighborhood are not going to walk around with a rag on their heads. The few times Mrs CTL wore a scarf (granted it was an expensive one), she could hear colleagues whispering and questioning whether she was undergoing chemo and had cancer.