I believe both fiat and btc are equally important in my life but if you want to save in large quantities I am more confident in btc because btc is a very important asset for the future if I only save fiat in the bank then the amount of fiat I save does not increase and I can not make it as an asset for the future.
I still need a bank for my various needs so I also choose both...
long-term savings in the bank is just a waste of time because the money we save, the value will be the same as when depositing it. but if you save in Bitcoin then the possibility of a profit of 5x-7x from the initial savings is very large.
it's true that in our current era we still need banks for our needs but maybe in the future we will no longer need banks unless banks provide coin services. In the future we will shop using coins so fiat is no longer needed or fiat may become extinct, then the transaction will be replaced with coins or gold, what do you think if it really happened?