The only downside of Ethereum right now is the
network congestion. It forces us to raise gas fees just to make transactions faster. I understand that most of the ICOs are using the Ethereum (ERC20) smart contract for token distribution, and only a few to other blockchain networks.
We are still in the first month of 2018, so it's still a long way to go. If ICOs are still using Ethereum despite the network congestion, there is a chance that it'll hit $10k over time. Just like Bitcoin, from $1k to above $13k today.
For realistic measures, I predict it'll go $5k by the end of 2K18, but correct me if I'm wrong later.

Sounds familiar isn't it? LOL.
I've been holding my Ethereum for last 3 months and I must say that it really give me a good profit. I hope that it will peak at $10K this year because it would made me very rich at the end of the year.

Its early to tell, we have seen how crypto price goes, very volatile and unstable. So the only thing that is on our side is those new investors that will come to the market in the next several months. I hope that they do flock and pour their cash on Ethereum and Bitcoin so that we can really surpass and get to $5K-$10K this year.