[johnnyanmac]

>If inflation is higher than what you can earn from a saving account, then how is it rational to "save" anything?

general security? You don't need to (nor should you) hoard 10% of your finances for all 40+ years of your career into a low interest savings account. But you do want to keep a decent amount in case of various downturns. a high CoL city where you pay not much more for "things" can help with that.

Can also help pay for an financial advisor who will happily play with the monopoly money for you. Delegation is a great "experience" to consider when comparing costs of living.