I find it bizzare that people have such specific dreams. Why not just keep your dreams more abstract? Like: I want to be in the creative arts vs I want to be

I find it bizzare that people have such specific dreams. Why not just keep your dreams more abstract? Like: I want to be in the creative arts vs I want to be a rock star. I want to own my own business vs I want to have a cupcake cafe. The more abstract your dreams are the easier you can reach them and honestly the more realistic they are.