The market is full of ups and downs but it is only natural as it is how the market works. Right now, you cannot prove that Eth is a shit coin with no intrinsic value because the investors are putting a value of it right now. Eth is playing at $1k plus already and it is ready to break it's ATH anytime soon but if you worried that the market will crash again once we can hit a new ATH then you should not worry about it because every happenings has a right time.
Meaning if you can buy at a right time and you can sell at a right time also then you will definitely profit for sure either you are going to buy Eth or other crypto currencies that you think has an intrinsic value.
The good part about buying right now, it would mean you could profit from it when it breaks over ATH and I think it will not stop here after coming this close to ATH price. When bitcoin was around 19k but failed to go above 20k, we waited nearly a month for it to go there, so we should give ETH a bit more time for it to go there. Plus we do have that phase 2 of 2.0 where staking will become a reality and it is about 1 to 2 years away, and I believe it is going to be taking the price a ton higher thanks to that.
However do you know even the best part? If the price ever drops in the next 2 years, you could always buy more from lower level, do a DCA, and you can profit again a lot when it becomes staking because there is no way it would drop after 2.0 became a thing, it will become something profitable for a very long time for everyone.