Well, Ethereum was always a major cryptocurrency which have some real applications in the 'Real' world. Not many crypto currencies are usable at this point into the real world. Either they are in development stage or just planning for their development. Ethereum has risen to a great length in the past and broke all the records of fastest growth.
For past 1-2 months it was down indeed, but it doesn't mean that it'll stay there. It has to rise. Many applications or even many cryptocurrency still use ethereum platform for their work. So, I am pretty sure it will rise.
Now, about it's fall, the reason being Bitcoin hardfork and segwit 2X implementation. Because of that segwit hype, majorty of people converted their money into BTC and left the market just to enter again after Bitcoin fork as well as the greed of Bitcoin cash. All the market was down at that time, alongwith Ethereum. And just after that Neo got a new announcement and all the focus shifted to NEO.
I am sure if a single news goes viral about ethreum right now, it'll rise exponentially and break it's all previous record. Crypto market is just news based. Most poeple invest illogically that's why good currencies are still at a low price like Factom, Maidsafe and Golem.
But people still ahve trust in Ethereum and it'll surely gain momentum shortly. In fact, it has risen greatly in past few days. Let's see what it has in its pocket for all of us . :)