Buy it as insurance. Pre 65 US silver coins will be a known quantity if the dollar collapses or in case of hyperinflation.
In the case of hyperinflation, paper money will likely be devalued, with a turn-in of old $10 becoming a new $1. However, most times this has been done, only paper money is affected and coinage is ignored. Which means that your old 50 cent piece will instantly become worth $5. Government figures most people only have a little coinage on hand. They don't know my wife, with many thousands of pennies, nickels and dimes. I have a lot of nickels; going through them I've found silver war nickels (they're still in circulation).