One might want to use a bank because their valuables would be guaranteed to be safe and closely monitored. people have to pay to have a safe or a physical place to hold money and other possessions and they wouldn’t be able to access it 24/7 but it’s much safer and secure than keeping it say under a mattress or something
If you came to settle on present-day New York City in about 1650, it's most likely that you're of Dutch descent, since they were the highest rate of immigrant at the time.