Actually i am into both POW and POS coins but they both have one advantage over the other,for example i have seen many projects that are still alive today all because of Prove of Work,these coins are profitable when mining and this is what keeps them alive,they have no real use cases, its almost the same for POS coins as well. So this is why i am not surprised that ETH want to start using POS as well,if its profitable enough many ETH haters will have no choice but to embrace ETH