Therefore, i think Satoshi prefered to sacrifice those premined coins for the sake of a better distribution of coins.
I think he did not think it would make such a big splash.... When he realised it, he already lost the private key to the coins he mined as part of the experimental in the beginning.
Satoshi had much bigger plans for BTC and he will never touch these coins. it is very likely that he destroyed his private keys in my opinion.
If satoshi really had decided to sacrifice or destroy his coins, he would have done so publicly by spending them to a black-hole address.He did not. Which only leaves us with two options, either he wants to keep them for whatever reason or he really lost the private keys (which I personally doubt).
these discussions will never end 
Satoshi might end them