Given that there is such a wide range of prices available in the kilt market, if people aren't wearing them everyday we can assume that there are other reasons...

Personally, I prefer to reserve the kilt for special occasions. Not because I'm trying to preserve an investment (my kilts are inexpensive ) but because I see it as a powerful social signifier that designates an event as beyond the everyday. I do, however, wear an acrylic kilt around the house sometimes, just for comfort.

That being said, if someone wants to kilt up everyday, then more power to them.