If and when cryptocurrency and/or bitcoin becomes the official currency of the world, do you think there will be a downside to it? If so, what do you think the negative effect will be once cryptocurrency becomes a worldwide currency?
The downside I see in cryptocurrency is the fact that it requires energy to use. What if the time comes that we don't have electricity to depend on? How would we transact? At least we should have a balance between using fiat money and using cryptocurrency. We can never know if we need fiat all of a sudden.