Because the premise of a compute based blockchain is inherently interesting. I'm very much for the furtherance of this topic and area of computation.
I believed that Ethereum initially had an interesting idea. I thought their system had little rigor in the way Bitcoin does... but I'm willing to look over pre-alpha stuff for the underlying concepts.
Tl;Dr. Showed up on top of HN. Greatly interested in the concept of compute-blockchain, but dissuaded of Ethereum specifically of company policy/choices.