I like ETH (especially the lack of fork drama every few months) but the only thing that's stopping me regularly buying more is a fear for what will happen to the price if the ICO market starts receiving sustained negative attention from regulators. Blog posts like this one suggest a (probably necessary imho) storm is coming:
https://blog.colony.io/the-colony-token-sale-7ac14c845bc0I know ETH isn't just about ICOs but I remain skeptical how big of a market there is, outside of the ICO world, for Dapps and smart contracts. That's before considering potential competition from projects like NEO, ARK and LISK; which could further splinter demand.