A thought I had.. Banks earn a lot of money, yet its free to use. If them loaning out/investing our money is so profitable, why would we keep any of our money in a bank?

is my logic wrong here, like shouldnt any sane person then invest virtually all their money?

i suppose the main counterargument is that its safer in a bank, anyway im not too knowledgeable so i wanna hear what people have to say here