ha, ha. i just got my bed skirt out from under my mattresses. it is mauve and eyelet, not my style anymore. Since i have one of those air mattresses and they are heavy, i will never get it back on again. If i want one, i will look for one taht had elastic.
I suppose you could "make" a bedskirt that way. Having a quilt hang to the floor can be a tripping hazard because the corners will stick out a bit. they usually don't lay flat against the bed due to the batting. You could of course leave out the corners, like quilts made for four poster beds. just a thought.