As much as I agree with your sentiments regarding the flaws of the fiat banking system, keeping all your funds in BTC or other crypto is a bad idea. You say you don't care if the price goes to 1 cent. If all your money is in BTC, I'd bet you would care quite a lot if you lost >99.999% of your net worth. Regardless of how "real" your 1 cent is, that's not going to pay your rent or buy your food.
Unfortunatelly yes by that time, so I can not keep all my funds in crypto; by that reason I do keep all my savings here.
Again, as much as I would like this to be the case, it simply isn't at the moment and won't be any time soon. As much as I would like to only use crypto, we have to use fiat for bills, food, gas, etc. Keeping a healthy exposure to crypto and various fiat investments is necessary for a secure future.
Nowadays the innovations change the whole systems in surprisingly short terms. I`m not sure if You can remember the old corded phones with analog dial-up. Actually the first broad commercial use of the mobile phones started somewhen between 1998-2000. And where we are now? For less than 20 years we use ONLY mobiles. I won`t even talk about the smartphones. We are rather too late with BTC and the reason is mainly by the fiat-master`s FUD.