Ok, have fun with your American dollar then
*clucks*
Hang on there. If I recall correctly, a bitcoin was worth $6,000 USD 2 months ago? Now it is worth $9,000 USD?
So if I went to the store to buy a cheep car for 9 grand USD today, I'd have to pay for it with one BTC. But if I did it 2 months ago, I'd have to have paid 1.5 bitcoins, based on the value of the current BTC/USD.
The value of the car did not change, but the value of the currency did. Which is BTC, which is compared to USD.
I mean, what is bitcoin valued against? It has no intrinsic value, so it must be compared with a currency like the USD which is backed by GDP and stuff like that.
What is BTC worth on it's own merit? Electricity chits redeemable at your local recycling venue? Carbon credits?
And if in one year, for some reason, BTC just jumped up to 1,000,000 USD per coin. Well, that car that was worth $9,000 USD is still worth $9,000 USD. But that single BTC you spent on it was a total waste, now wasn't it.
The coin you gave away for even consideration of a $9K car is now worth 100X that amount. Tough noogies, eh?
The car is still worth only $9K, but your BTC is worth a million.
And it goes the other way, too. BTC drops from $9K per to $9 per in USD.
So you got the car at a bargain. You basically invested your BTC in a $9K vehicle, while the price of the coin crashed 100X below it's value.
This is not a stable currency, man. The car is still worth the same amount in USD, but your alternate currency is flipping so wildly around any real value that it is impossible to use it as a base for a monetary system, because it HAS no base. It's made up on nothing like GDP or GNP! Not on goods or services, imports/vs exports, and THEIR currencies..I mean, geez!