[siffinleex]

It is both a currency and a means of investment, all currencies are, even inflationary fiat currencies, the people who get in first when interest rates are high can earn a lot of interest before the currency is eventually devalued by the controllers.

In theory, when bitcoin reaches a saturation point of adoption, the value of bitcoin won't increase anymore (it can't if there is no more demand). At this stage deflation would technically have stopped and the currency is matured.

This should lead to a much more stable economy than we have now, where people aren't encouraged through the use of cheap credit to make emotional purchases for things they don't need, sure the economy might not "grow" at the same rate but the growth would be a more precise representation of what people truly needed (instead of just being a big party). Maybe people would even lead more stable responsible lives.