The difference being of course: nobody has a clue on how to achieve no nuclear weapons, 100% zero emmission energy, world peace, etc. So you might wish it, but

The difference being of course: nobody has a clue on how to achieve no nuclear weapons, 100% zero emmission energy, world peace, etc. So you might wish it, but it just not going to happen right now. But Bitcoin is a known solution demonstrating how to implement a decentralized digital currency. It is working. Today. So the utility it has, and the impact it is about to make on society is enormous.