Yes, ETH is still worth investing, but in a couple of weeks, when the price drops even more. Now it's better to just wait. I think the price will fall again before stable growth.
I'm wondering, what are the limits of the decline of the etherium the user expects to date? If the price is 280 dollars today, what do you expect tomorrow? 200 or 100 dollars?
many of us still expect to see ethereum can increase higher and back to the higher price but unfortunately, we don't know what will happen tomorrow so it is better we use this moment to buy as much ethereum if we have money. but if you think that you don't want to buy and prefer to wait for the increase of the price, then you can do that while you can do another thing.