Because like any trendy technology it was way oversold. We are mainly tech people here and when we look at the current state of the art, it's very easy to see t

Because like any trendy technology it was way oversold. We are mainly tech people here and when we look at the current state of the art, it's very easy to see the technical shortcomings (the state of the art is still pretty bad). What the blockchain critics on HN generally don't see is the future potential of the current (mostly half-backed) technologies.