It should decrease (long term) as the amount of 'mining' naturally goes down with the lessened 'reward', per the schedule. The fee based crypto-breaking should be less. As dedicated crypto-breaking hardware is manufactured with an eye towards energy efficiency things should also get better. In the short term, yes, this is totally crazy. But in a few years, things should be much better.

That said, how fucking sci-fi is this?! Remember in the old games and novels how 'energy credits' would be a currency unit in the future. Well, looks like we are in the future then. Bitcoin is pretty much a 'baby' energy credit, it's also more than that, but it is an energy credit in a nascent way. I mean, that's pretty cool to teenager me.