If Bitcoin succeeds, it will consume 51% of the earth's energy supply. If you want to claim this is bad, you will need the support of some sort system of universal ethics.
So, let me counter with this question: If we presuppose we can't label anything "bad" without settling that debate, then is murder "bad"?
If you think murder cannot be defined as "bad", then why have we outlawed it?
True.
> If you think murder cannot be defined as "bad", then why have we outlawed it?
The original comment has already been downvoted and is on its way to becoming invisible, so I see no point in having the debate.
[EDIT]
Or for that matter, I don't see the point of taking any unpopular position on HN.