Hey sir, with all respect don't you think it would hamper the overall growth of Bitcoin, maybe after which the identity is reveal it would be under threat of government to have a general control over bitcoin to make it remains centralized instead of decentralized. The solidity of bitcoin was the result of anonymousness of Satoshi, with that people develop much more interest to invest in bitcoin.
And Yes people should be worried where and how their money is going because it's a thing of concerned sinking money into an ocean we don't know about depths, still even as that they do not mind to know about him and yet they solidly rely on it.
Satoshi is the creator of bitcoin but he cannot control bitcoin, bitcoin is not centralized and depends on a single individual. He created bitcoin and gave control to the community, any changes to bitcoin require the consensus of the entire community, no individual can decide on behalf of the entire community. If he wants to change anything related to bitcoin, he needs to propose it and it needs a community vote, so his reappearance won't change what's going on. People are afraid of his identity being revealed, mostly out of concern for his safety rather than fear that bitcoin will be in trouble if his identity is revealed. Or many people want to know his identity out of curiosity as EFS said.