I don't know if this thread has been created before, but I would like to know your opinion on Cryptocurrency versus Fiat.
If you could tell me why too. What are the benefit of each?

I actually choose both of them. I earn money from crypto because the income I get is higher than income of job I can get here (teaching).
in the other side I still need fiat to buy needs because not many shops accept bitcoin as payment here in my country.
so why don't have both?

That's right, its better to use both of them and grab the benefits from both, fiat is very convenient to use at offline stores while bitcoin can take care of online transactions.