Many people won't realize the damage that is cost by wasted resources until it is far too late
We won't be able to stop ourselves from destroying every last resource in the name of greed.
"By November of 2020, itd use more electricity than the entire world does today. Thats bad. It means Bitcoin emits the equivalent of 17.7 million tons of carbon dioxide every year, a big middle finger to Earths climate and anyone who enjoys things like coastlines, forests, and not dying of mosquito-borne diseases. Refracted through a different metaphor, the Bitcoin P2P network is essentially a distributed superintelligence utterly dedicated to generating bitcoins, so of course it wants to convert all the energy (and therefore matter) in the universe into bitcoin. That is literally its job."
(Source: Wired, December 15 2017)