It can't be worth any microscopic performance benefit to not just be safe/precise and substitute a decimal datatype in 99% of cases. Something crazy like HFT mi

It can't be worth any microscopic performance benefit to not just be safe/precise and substitute a decimal datatype in 99% of cases. Something crazy like HFT might be an exception, or if it's just a quick excel sheet. Otherwise it's still a perfectly good rule of thumb to keep money in decimal types if you're writing code.