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.
That is the opinion of many miners and like others I think this is a negligible issue because the out come of the bitcoin is much better than the cost but this issue should be fix as soon as possible because this increase the mining cost immensely which reduces any gains for miners who came to the mining field with the desire to earn bitcoins and there job is very important to the bitcoins future and its existence