Bitcoins have all the same beneficial qualities of PMs. They are finite, they cannot be created or falsified, they cannot be destroyed, and they are divisible.
Unlike gold, not even a fusion reactor can create Bitcoins. BTC doesn't require a safe/guns/ammo to protect it. BTC is weightless and transactions travel at the speed of light, via the internet, from your "pocket" to your recipient's "pocket". No middlemen, port authorities, what-have-you.
Now, I'm not saying "don't own gold". Most of us pro-BTC folks think owning PMs is wise. What I am saying is that Bitcoin has some amazing properties that put PMs to shame. Most notably, that it can't be intercepted, controled or created by a third party. It is 100% compatible with the goals of the Liberty Movement: Sound Money, Free Markets. Nothing exists that is freer than Bitcoin.