reaching a new ATH for ETH is very possible for me. we are not talking a crap platform here but one of the top performing crypto projects. so there's no worry if they will achieve a new ATH. the question here is when? but if you do believe that ETH has good future, you can always invest some of your funds into this project anytime you feel you have your advantage of.
For those that are thinking on the long term the price of a ethereum is still very attractive, and while the question of when a new all time high could appear in the ethereum market is without a doubt important, it loses a great deal of its significance if you are willing to hold your coins for a very long period of time.
After all if you buy your coins right now you're still getting a very good price and the only thing that you will need to do is to wait for the all time high to appear, I understand that some people may think that this is a very passive strategy, but personally I only care about the results and we know that holding your coins for the long term, as long as they are good coins, is a very effective strategy.