Mining is not about USD "profits" its about how much crypto you can mine and hold. Anyone who mined and held two years ago is 100x better than someone who starts mining now because of "crazy USD profits".
You are not wrong, but there's no truth about mining
You can mine for USD profits and withdraw in fiat every month to pay for your gpu and electricity, and to buy another hardware
You can mine for a long period and even at loss, when diff is minimum, but you have to pay for yourself the electricity
There's some people mining to secure network of their desired coin, or gamers mining to at least pay some percentage of their PCs
This is the beautiful side of GPU mining and cryptos, it's decentralized, everyone with a GPU can mine
I mined since 2017, but after the crash of 2018 I sold my hardware to buy again in the early 2020, and now I have a very small farm, but I'm doing good
I'm happy because I spent more than 6 months only mining and taking 20% to pay electricity, and now I have the coins to sell, it's better, but we don't know the future, maybe it's going to last 1 month of crazy profits, or 3, or the entire year...