I just like to build new things, like creating your own art, something to call your own. Sometimes it solves a real problem, sometimes it is just something you feel the world needs. I like the challenge of trying to sell it. The money that may come with it is great and it is a way to keep score. Some like the fame and attention it brings but others just prefer to be known quietly and proudly as the creator. Whatever it is, it is probably one of the coolest thing you will ever do.