No hypothesis or intuition at play. I've read some of the many articles covering the performance impact of using docker on various metrics. Useful metrics, unlike an electric bill.
Huh? Electric bill is the #1 useful metric for any workload at scale. If you're small, maybe human administration costs dominate that, but otherwise it's virtually guaranteed to be the primary operating cost.
I guess so, but if it matters that means you have hardware and I hate having to manage hardware. So I guess that colors my opinion on the matter.