I believe in the young Canadian founder of Etherium!
However, the biggest downside right now is the possibility of strong competition. Etherium has first-to-market advantage with smart contracts, but there's a lot of innovation in other blockchain technologies. The price is also very attractive for newer platforms and will sway many to take a risk on them.
Either way, what @haejin summarized here isn't wrong or negative, but very indicative of a decent bull run... may it span many months until the next rollercoaster dip.