Well, a lot of people are in to Proof of Stake currencies which use very little energy compared to Bitcoin. Which obviously "wastes"(I use that loosely since it's a loaded term) a ridiculous amount of energy.
POS is save energy and has no intrinsic value. BTC is mined through expensive mining rigs and consuming a lot of electricity. Its price is over $620 and stable. There are intrinsic value to support its high price.