Have you ever thought about it? Bitcoin is essentially the process of converting energy into currency.

Now a bunch of people criticize the PoW mechanism for consuming too much electricity, but looking at it from another angle - that electricity consumption is actually the cost of network security. The more energy invested, the stronger the value endorsement.

If one day the symbolic system of traditional finance collapses, what currency can ultimately stand firm? It is likely to be energy itself. And Bitcoin happens to be the digital form of energy.