I am always shocked that a craft store has 100+ kinds of acrylic yarn and maybe one or two wool yarns if that.
It seems a grandmother will spend 20 hours knitting a scarf and not care that they can make a much better product for a few $ more in materials.
In other case synthetic materials be might really better, but for knitted scarfs, sweaters, and such it no contest. One material will protect you from fire by forming a char (wool) and the other will melt and transport heat right to your skin and make sure you get burned.
It seems a grandmother will spend 20 hours knitting a scarf and not care that they can make a much better product for a few $ more in materials.
In other case synthetic materials be might really better, but for knitted scarfs, sweaters, and such it no contest. One material will protect you from fire by forming a char (wool) and the other will melt and transport heat right to your skin and make sure you get burned.