The amount of power you need to mine Bitcoin. It’s astronomical. Consumes the same amount of energy as Switzerland.
Governments playing hardball once global currencies are truly threatened.
People being scammed out of their coins, losing their wallet/keys or locking themselves out of their account and there’s no central authority to get it back. Imagine all the times you locked yourself out of your email, online banking account or lost your password to something.
Vulnerable to professional hacks. If someone could gain 51% of the computing power, they can hack the entire system.
Trading one system of control (banks, central banks, governments, regulators) for another (miners) under the guise of being decentralized when in reality there’s only a few parties in the world with enough money to run these Bitcoin mining systems profitably meaning there could be a handful of unsavory wealthy individuals who essentially control this internet money supply. And unlike before you have no idea who these muthafukkas are. Think James Bond villian type sh*t.
Taxes. Coincides with point two. If governments treat it like a security, people can’t spend it like dollars as every transaction is taxable if the currency has appreciated in value. The tax situation is a nightmare still.
Tied to the electrical grid. Assuming there’s a doomsday power outage, gold is at least valuable. You can trade that still. Bitcoin is magic air money that will vanish in a poof.
The usual. Bitcoin being used to funnel cash across borders for various criminal acts.
I’m invested in Bitcoin btw but that’s how I see it