It depends on the bank. There are some banks that I wouldn't be comfortable leaving more than a couple of grand in and account with. Which is about the same amount I'd be comfortable leaving at home. At least in the home, you can hide the money or install a safe. Home insurance will also, usually, cover cash losses in case of a break in. When someone steals from your bank account, you can usually get it back, but it takes a long time and isn't always guaranteed.
A large number of people I know have had money stolen from their accounts, some of them from big name banks too. Sometimes due to card skimmers, sometimes dodgy retail outlets, but other times it's been bank employees stealing their details to make purchases.
With money, the saying 'don't keep all your eggs in one basket, is very pertinent. I have money spread in 3 bank accounts (2 local and one overseas), stocks, gold, crypto, cash, and property (my home). Not that I have a lot in any, but i've set it up in such a way that it is easy to put money into any. Keeping all of your money in one place is a really bad Idea. I would never recommend having more than 5% of your total assets in something as risky as crypto though. Stock market investors use a similar strategy of diversification with a small amount allocated to high risk/reward investments.
