I fear for ETH future, almost all smart contract projects are using the PoS staking algorithm but only ETH PoW stands alone, this makes ETH different and one of a kind smart contract project, I think vitalik buterin will regret is decision after ETH goes PoS.
how about if the opposite happened, when POS was released, it turned out to strengthen the position of ethereum. and your worries never come true. isn't this also one of the possibilities that can happen when ethereum releases POS. imagine when eth 2.0 runs fully, that means TPS has been upgraded and scalability issues have been resolved. network fees can be very cheap, cheaper than today. these are some of the advantages of upgrading the ethereum network that we will feel. so there's no harm in accepting this upgrade.