I think investing in bitcoin is more secured that gold. The user account of Bitcoin is protected by a password that can know only the user unless the user says to others. So, no one can trace the account. On the other side have a chance of theft of gold. So, Bitcoin is a secured investment sit than gold.
I am disagree with you. Your bitcoins may also be stolen by hackers. They can steal your password. This has happened to many people.
And you did not consider Bitcoin price fluctuations.
I think Bitcoin can be more profitable than gold. But it is more risky.