Satoshi knows the reason why is silent and he doesn't want anyone to know his way about, I believe that Satoshi that when Satoshi launched bitcoin in 2009 their was attacked by government that makes he to be in secret, if government notice the formular of bitcoin, I think they will destroy bitcoin, and if government seems Satoshi they will get him arrested and that's why Satoshi lives in secret so that he will not face any trial by the government, because from the day1 bitcoin was launched many nations kicked against bitcoin because they taught that bitcoin will be use for money laundering and their own currencies will not be valid since bitcoin is existing
people will always ask a question like "who satoshi is?"? or "who own those bitcoin addresses?" in an attempt to fit bitcoin into the traditional models of ownership and control. But that's precisely the point- Bitcoin doesn't have a leader
or a central owner. It belongs to everyone and no one at the same time.
it's all started with the message that satoshi embedded in the very first block of bitcoin; "The times 03/jan/2009 chancellor on brink of second bailout for banks" this mighty a clue that central banks and government are the only enemy of bitcoin from starting who doesn't want to change the old traditional fiat system.