He didn't make something. He tweaked an existing quality that already existed in computing, turning it into Bitcoin. There is a finite amount of it, and more cannot be made. Scarcity is the driving force of its value. I would also like to ask why the dollar has the value it does? It's not backed by gold, it's backed by the perception of the US government to pay back its debts. Many stocks are traded on perceived value as opposed to the valuation of all the company's resources. Bitcoin is pretty similar to these in that regard. Actually, the guy who discovered Bitcoin is believed to be a guy that doesn't have electricity in his home. He's one of those that do it by choice, not necessity though. Maybe he has a lot of Bitcoin, maybe not.