Yes, and if some radical muslim dropped a nuke on Wallstreet, then the value of your pension is probably the least of your worries.
Gold and silver are not hard currency, they are commodities. And, in the case of the above scenario, you would probably be much better off with several guns and LOTS of ammo rather than gold and silver stuffed in your safe.
Won't argue either point as both are correct. And I have two safes......;)