Honestly, in the US, you will be destitute unless you are immensely wealthy. Nursing homes cost $100K a year today, imagine what they will cost when it's your time to be in one. Insurance doesn't cover it, neither does Obamacare. If you go the Medicaid route, they will take all your income and assets minus your house and car, assuming they are paid for.

It gets depressing fast, enjoy it as much as you can until that day comes.