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.
Because it is Satoshi Nakamoto?
For sure, there are a lot of people that are curious who Satoshi Nakamoto is but there are those like that that don't care. I mean, yeah there are those movies that just interest you without you knowing who the director is. Each of us has a different point of view on this but since Satoshi is a mystery online, that makes people more curious.