I tell people to have fun transporting $1M, $10M, $50M of silver, gold and other precious metals versus BTC.
Before other readers beat me to it, you can get paper gold, silver...(insert commodity) and/or have custodians manage the metals on your behalf. I get that.
However, I'm talking about directly owning these assets to compare apples with apples—i.e., physical 9, 18 or 24-carat gold vs. BTC in a non-custodial wallet.
Until someone compromises Bitcoin's encryption before its blockchain migrates to/implements a compatible, quantum-proof alternative, then it will remain the most portable, censorship-resistant asset around.