Data Centers serve useful functions, mining does not.That $400/mo could have been one of my comments. Anyways, it's winter here in the Northeast USA, so my PCs heat my apt. Since my apt. has electric heat, the PCs offset that (the heater basically don't come on, unless it's below 0F outside). So, no extra power wasted. Now when summer comes along, you might have a valid arguement. Although, my apt., has a limit on the amount of power I can draw through my 20A circuit, and the AC is on the same circuit, so I probably won't be able to run all of the PCs, or maybe I can, because now I have more efficient, lower-powered video cards in most of them as compared to last year.
And what about those data-centers, filled with racks and racks of GPUs, for cloud computing? Aren't those facilities equally at fault for "polluting the environment" as "miners" are? Should we shut down the cloud-computing data centers, just because of the environment? Considering the advances in solar recently, electricity is getting cheaper as a resource.