It's just not Ethereum it's the entire crypto world that's kissing the floor, it's an extended period of bear run and nothing can be done about it, except to sit tight and hodl your coins. Another reason is all Ico's sell for Ethereum coins, and due to Ico's selling there is wider pressure on Ethereum. I would suggest you to add few Ethereum coins cause they're selling really cheap, and Ethereum is a popular alt coin it should rise up soon.