No idea why you are thinking that.
Looking at whattomine.com there are still 6+ coins that are close to ETH mining profits.
-Dave
They are only profitable because eth is profitable, that is called the chain effect, that is why cryptocoins are valuable, because bitcoin is valuable. If no more eth then what is the enxt coin profitable as much as eth? there are none, so nothing will carry that much hashrate or even the demand for such coin, meaning of this thread is gameover for now is getting very close, yeah could be another coin in few years but that will take time, I believe it will have another coin as good as eth to mine, pay attention that quantum can destroy 99.9% the existent cryptocoins, including bitcoin itself, so you trolls that think bitcoin will forever live and all, pay attention to that, nothing in this world is forever, not even diamonds.
Anyway, You trolls should hold for what is coming pos eth merge, dont be a sheep.