If you place your cash with someone like Bernie Madoff then you pay your money and you take your chances.
Banks are different, they're the lifeblood of society that provide the liquidity for normal economic activities.
Otherwise people would hoard money the way paranoid goldbugs hoard gold. Economic activity would cease, the property market wouldn't exist unless you paid cash, crime would be rampant, you don't need to be Albert Einstein to be able to see the consequences, which is why the established banks have an underwritten amount of insurance for depositors.
There have been instances where the actions of one person have rendered a bank insolvent and to suggest that thousands of innocent depositors should lose their savings is heartless and cruel.
And the goldbugs think the banksters are mean-spirited capitalists.
Banksters are law-abiding, decent and philanthropic compard with spanners.