Catwalk fashion real or ridiculous?

When you watch catwalk shows most of the clothes you see are very dramatic and original,but do people really wear these clothes?I think that the stuff they show isn't intended to be purchased and worn by costumers.It just shows what designers will come up with on a sheet of paper trying to think of something that hasn't been on the catwalk already.I am sure that some people buy these clothes but you probably have to be famous or have a lot of money,because a lot of people can't afford them.Thats why in my opinion,catwalk fashion is absolutly ridiculous because half of the people in the world don't wear catwalk fashion and a lot of these clothes are so transparent that you should probably walk naked around the streets anyway because it would be just the same.