Why Satoshi hide? I want to hear some plausible explanations.
Seems quite an obvious thing to do if you possess (potentially) great wealth. Fame and riches have their price, there are enough crazies and criminals who won't leave you be. Or groupies

Or paparazzi. Or relatives, friends of relatives, random people on the street etc.
The above must play a role, though the impression given is that he is a very private person and there is nothing wrong with that.
I can just see people in the future commenting on price fluctuations: "Looks like ol' Satoshi is at it again, God bless 'im!"
Imagine he got declared a saint in a couple of hundred years
