you're missing the point of pinterest, it's not "things i want", but rather things i like. The whole premise is showcase a personal aesthetic. it is through these aesthetics that we learn more about each other. obviously there is overlap between the things we love, like maybe old cars, or sailing yachts, or (of course) cats, and the things we want, but pinterest isn't about consumerism at all. if you spend any time on it, you'll see passion, places to visit, vintage trinkets, and about a billion wedding dresses. people use it a lot for planning and mood boards. It's easier to explain something visually than it is with words (sometimes) and pinterest taps into that aspect. It's mainly for (I suppose) "creative types", those that are visually stimulated by colors, fonts, textures etc. And of course cats.