[icebraining]

Right. I'm not in any disputing Gresham's law; if you have enough USD to cover an expense, you're surely spending it first.

But the idea that "the reason why you spend any currency instead of buying BTC is because you need to" is just plain wrong. You're essentially saying that people spend strictly what they need to live and save every penny beyond that, and can only wonder whatever led you to that conclusion.