I don't use banks, I think bitcoin is awesome and makes far more sense than fiat. I'm just not going to offset miners costs when they system could run much more efficiently. It's like paying a taxi to get you somewhere the longest way possible. I still use BTC whenever I have the chance. I just don't buy from miners.
You guys forgot to mention network security (look up the 51% attack) What is the cost of security and how do you even go about measuring it?
This is the only comment that added any value whatsoever to the notion that we should have as much Hashing power as we do.