I don't see much problem with it (other than a perhaps over hyped paranoia of how powerful governments are at manipulating commodity prices). You prefer gold and silver. They are decent and historically fairly stable. A pretty safe investment. I do not discourage buying gold or silver. I was actually looking at some gold websites to see if that could be a "like-kind" transfer of my bitcoins if the price skyrockets in bubble fashion and I want to move out for a few months without tax implications.
However, how would I sell my gold back for bitcoins? Where would I store my gold? How can I move it to a new country?
As time has gone on I have realized that we spend a lot of money on protecting our property. We pay police, state governments, national armies to protect our property. Gold requires spending money either through taxes spent on a safe place to live where you can store your gold. It is a constant cost to keep people from taking your wealth.
Bitcoin does not have this cost. No government is required to protect my string of digits and letters. I can hold my wealth without needing a safe, home security system, local police department, national military, etc.
For some of my bitcoins I recently purchased some crypto-steel and stored some bitcoins on those. I just moved from Afghanistan to Korea spending a few weeks in Thailand, Cambodia, Vietnam and French Polynesia. By moving, that meant bringing my crypto-steel with me (not trusting it to some post office). So here I am traveling with these metal squares through various security. I spent about 15 minutes in Dubai trying to explain my crypto-steel to security (I had them wrapped in metalic tape to ensure nobody tampered with them). I finally had to unwrap one enough to show what was inside (I also had full chemical gear so that was part of the inquisition as well....long story). I ended up checking my bag in with the crypto-steel from there on out and was paranoid every minute that they were not in my possession. Every hotel I went to had to have a safe. I ended up in one hotel without a safe and I only left briefly to eat. I ended up using a bus instead of going on airplanes when I traveled due to the difficulty. Flying from Vietnam to French Polynesia I decided to keep the crypto-steel with me to avoid the worry I had before. I had to explain to a Vietnamese security guard what they were, I used pictures on my phone and was ok after 5 minutes (I was surprised when he said "oh, Bitcoin!").
If I had as much money as I have in bitcoins, in gold I would be carrying around 100lbs(may be way off) in gold from country to country. I can't imagine being mobile with gold.
For most people the cost of protecting your gold is already built into your lifestyle/taxes/home costs. For them, gold is a solid choice. Bitcoin has its place in the future economy and will be the choice for many people down the road, I don't see it as an all or nothing deal. It does not have to be.