Ethereum just scored a new ATH since December 2017.
The all-time high was in January 2018, not Dcember 2017 
IS Ethereum still worth it tho?
It's supposed to be a lot more than that right now, If conditions remain the way they are, maybe we could see ETH between $1,500 to $2,000 even if it was for a moment. BTC is almost two times its previous all-time high in 2017. So I would expect ETH to also reach a new all-time high during this bull run