Silver is useless enough to be the best electrical conductor in the world, gas of the electronics industry, tvs, microwaves, fabrics, batteries, mirrors, medicine etc. You don't need to buy physical, but its good to have some if TSHTF. If the price jumps and the gold/silver ratio closes, convert some to gold. That or find a refinery. Its better to store wealth than have your $ go to .70c next year. The $ is credit.
The majority of people don't understand the value of something. A 1964 quarter is worth over $3. A 1981 penny is worth 2.5c. A nickel is worth 7c and rising. Lugging around silver for past three years netted @ 300%.