When/if Bitcoin becomes the world currency, it's price will stabilise to match the global desire to defer the completion of trades (i.e. the aggregate desire to

When/if Bitcoin becomes the world currency, it's price will stabilise to match the global desire to defer the completion of trades (i.e. the aggregate desire to purchase goods in the future). So you might expect to see it go up and down depending on very largescale worldwide trends about purchase timing.