If someone hacks into Coinbase, they could steal alot more than 2 thousand dollars. xD
I'd say if you trust yourself:
- Cold Wallet
- Paper Wallet
If you don't trust yourself:
- Bank Vault
- Get a trusted person to hold and keep your Bitcoins safe.
If you don't trust yourself then it means bitcoin is not for you in the first place. Bitcoin is created for people who can mange their own money and are not afraid of it.
You better stick to the FIAT and banks if you have trust issues.
Use a wallet key and store it on an external (offline) drive or USB. That way you dont have to worry about hackers stealing your pass key.