Once cryptocurrency is universally used, it won't make sense to keep it as an investment as the price will stabilize.
Quick question op, are the Fiat currencies that are universally used stable?. Bitcoin won't give as much ROI as it usually does holding so the only option will be trading just as the fiat currencies are traded between themselves in the forex market, so will bitcoin and other cryptocurrency be traded. That's why bitcoin is the solution, it's decentralized, digital, can be used as an assets also used as a currency at the same time.
Wow I agree, finally someone who understands. Sure fiat also isn't stable, since usually goes devaluing it self over time because there is just too much of everything, but we still must not forget that bitcoin is some sort of a scam too. Maybe to me and to you that's not the case, but to someone who doesn't get it, or doesn't look into it, would not know, thus driven only greed and after that loss of money. And we must not forget, we are making those who are rich even richer. So grab as many bitcoins as you can when cheap and sell when mooning high...good luck