What I Love About Ethereum:
First, let’s separate Ethereum the technology from the Ethereum community. The success of an open-source project depends on community involvement as much as the technology. Compared to Bitcoin, Ethereum has done a much better job at building a community of developers with multiple implementations, great communication, and quick decision making.
I love the Ethereum community and the culture of fast experimentation.
Hard Computer Science Problems:
Ethereum, in my view, has taken on at least three hard Computer Science problems. It’s unclear if any of them can be solved in a practical sense. What’s worse is that the broader Ethereum community believes that Ethereum already has the solutions or is close to having them.