christiana, open your eyes and look around you. There are 1000s of people spending money on 1000s of things which have no use, which aren't FOR anything.
I can guarantee that you have spent money on something I would never dream of owning, nay would rather gouge my eyes out with a blunt spoon rather than own. I wouldn't, however, call you all sorts of names and make all sorts of judgements based on that item.
I spent £160 on a handbag recently. I could, quite easily, have spent £3 in Primark instead.
FWIW, the majority of people owning private plates at DSs school are staunchly Boden Style rather than Chave Style.