If you have enough Fiat currency I will advise you to keep it at home, if you don't want to invest in BTC because Banks will frustrate you by cutting your money every week, every month without even doing any transactions. The bank customers complains every day. We are tired of the complains.
Keep your Fiat at Home if not BTC
That is a very risky proposal and I would not recommend any friends or family to keep their money at home. Just last night did they break in the apartment above my parents and stole a lot of valuables it seems. The neighbors are on vacation over Christmas and came back home only to find their apartment being cleaned out. In my opinion the risk of breakins is too big to have large sums of money at home. Most homes are not designed to safeguard money, you would need to buy a safe where you could store money. But a good safe is expensive and needs to be installed properly, otherwise can criminals just steal the whole safe. That is why I would keep my fiat money at the bank, even if you don't trust the bank. There are a few steps that can help to protect our money at the bank. First of all, make sure it's a big bank with a lot of cusomters and there is no negative news about the bank. The second step would be to spread out your money across multiple banks. Depending on the amount of money you have, I would rather have 2-3 different banks than leaving all your money with one bank. In my country the government guarantees savings accounts from the banks up until 100,000 Euros. So whenever you would get close to that barrier I would recommend to open a new account with a different bank to avoid having uninsured money.