When people talk about the benefits of bitcoin over Fiat money, one of the biggest advantages is that bitcoin is more secure and the bank has not control over your money. Generally, people talk about the lack of 3rd party.
Give some examples of the problems with banks you have faced that there wouldn't be if cryptocurrencies existed that time.
Not really secure. Fiat money and cryptocurrency money have imperfections. No matter what you use, there is still a probability that your funds may get stolen by someone else. Meaning, as much as possible we have to do precautionary measures in order to reduce the risk of getting your funds stolen.