Why do people care who Satoshi Nakamoto is/was? It's like wondering the name of the person that created the wheel. Sure, I suppose I would be curious about the name of the inventor of the wheel, if nothing else to raise a beer to them from time to time, but ultimately the wheel is the important part of the story.
Actually you've made a point. Who knows how many things there are out there that we still don't know the inventors of them. But it is a big curiousity in the end. For example, we know who invented Ethereum or many other well-known cryptocurrencies. But we have no idea about Bitcoin. Actually we have some ideas but we can't still prove anything.