Everyone can't hoard bit coins, that's the point. Unless you are mining them, which is a small portion of the market I assume, you are buying them from another person. Ie someone else has decided to sell.

I get bit coin, I think it's interesting and useful as an alternative currency. But any hope that it is going to upend USD in any meaningful way is wasted. Dollars are far, far ahead in value, convenience and redeemability. And I don't see that changing anytime soon- at least not soon enough to get in on the speculation.