Oh... I'm surprised I'm part of the majority of votes.

In the current state of our world, both have to co-exist for now. To get the best out of cryptocurrencies, we need to cash it out into fiat by some amounts in varying intervals. And if we are to get the best out of fiat, we need to invest in crypto during dips. Of course, I'm only stressing the relationship of the two currencies, regardless of other methods of obtaining such.

The world isn't ready for exclusively using crypto yet. It has to first take advantage of both, until for some reason it is no longer beneficial for fiat and crypto to co-exist.