I had been reading up on Proof of Stake and the advantages and disadvantages. As if I am correctly informed, it is planned to change from PoW to PoS in the near future, using Casper. I had also been reading on why they would do so Why Does ethereum plan to move to proof of stake
I am actually wondering, why they did not created Ethereum right away on proof of stake, as nextcoin. Anyone any ideas?
Best Answer
A basic answer is that Casper was not ready (and Proof of Stake theory back then was lacking maturity).
Vlad Zamfir has some posts on his Medium about The History of Casper, starting with Chapter 1.
2 commonly cited problems with Proof of Stake are:
Chapter 2 concluded with the status on these problems and the path forward: