https://motherboard.vice.com/en_us/article/7xmvbq/bitcoin-energy-science-world-electricity-demandNow Motherboard is not the best source for news, but let's consider the implications of this...
Consuming immense amounts of energy is actually somewhat counterproductive if we consider the vision of Bitcoin giving us tools for independence. And it's somewhat unethical because we should not be using more than we need on this earth.
However, we don't really know how much energy it is consuming at this stage, so this could just be another reporter trying to find a story.
In my opinion, energy consumation is already been a problem even before. What others should say is that bitcoin is added as a contributor to this. Everything existing and being developed nowadays really do consume energy. And I believe, there are ways to solve this problem. And that would be the use of natural energy. There are lots of ways to make alternative power resources. Investing, saving and helping nature is what we should do.