PoS is hated by big miners because they wont be able to mine anymore. Honestly, I wouldn't mind solely PoS at this point, or at very least the PoW reward being reduced to 1/16th + marginal PoS. There is enough to hold and to trade. You can also have a coin cap with PoS as well, doesn't have to be indefinite.
BTW, what is wrong with holding? Doesn't everyone hold some if they can? Why do banks exist? CDs? Why do I have a savings account? Because we don't spend all our money when we earn it. Holding = faith in the crypto world. There is no reason to have a wallet with EAC over BTC. 0.
There is nothing intrinsically wrong with holding, but it's a zero sum game. POS takes that dynamic away, and removes incentive to put your money to work. The only conceptual difference between POS and fractional reserve is the issuing authority is different.
Technically, they are much different, and I have heard now from about a dozen people with far more experience than I that the technical problems are many, and dangerous, even if you leave out the economic arguments.
Bank accounts are NOT holding your money, even though that's the (now) common perception. They lend it out at interest. On checking accounts, it's only for quick transactions, or they have it covered by incoming payments (in theory. In practice they've been using fractional reserves since the mid '30s). C.D.'s and similar instruments are used for parts of medium to long term loans, which always have a higher amount of interest than what the depositor is paid. Thus you are loaning the money to the bank to invest on your behalf, rather than doing it yourself. It's both risk mitigation and hiring a middleman.
That in itself is not a problem, and could easily be done in the world of Crypto. It does require a level of transparency and trust above and beyond the coin, but so does Gold, which is where such things started. Bankiing isn't evil in itself, but central banking where they issue the "money" has become an impossible nightmare. I wish to avoid repeating the mistakes of the past, which is why I'm opposed to POS.