It's possible that Ethereum merge will be postpone more than once next year but they will eventually switch to proof of stake for the consensus, I already have a node participating in the PoS.
Forget it, the blockchains of the PoW coins we could mine with our GPUs compared to Ethereum blockchain are tiny tiny tiny. This is why I started to invest in PoS Ethereum nodes validator.
We still have probably half a year to make decisions. Video cards have paid for themselves long ago, but I will not stop investing in mining. I will buy new video cards that consume little power.
And I already wrote my arguments about POS mining. These are also certain risks.
Agree! Yesterday I received a RTX 3070 non-LHR so I could build another mining rig.
There's always risks, the thing for me about POS it's even with Rocket Pool we still have to stake 16 ETH + 10% to run a node validator which is a lot of cash (it's around 81,000 USD in date of Nov 7, 2021) compared to building mining rigs it's way cheaper.
But the ETH you stake you'll be eventually able to recover it (after staking it) with most probably a good appreciation so if you only look at the hardwares cost for your node, it's sooo lucrative (more than 100% yield per year) but yeah it's very expensive to buy 17.6 ETH.
With RocketPool you'll be able to stake small amount of ETH like 0.1 ETH but it won't give you a yield as good as running a node validator hehe. It's like a Banking license kind of...