Crypto investors are turning to Military grade vaults to safeguard their Keys. While some prefer to know the Keys by heart, some have their crypto stash in physical dedicated crypto wallets like Trezor and pay big money to have them stored in Nuclear sheltered safe vaults. Take for instance
Swiss Crypto Vault who offers Nuclear sheltered vaults to crypto investors. if you had 2000 bitcoins what options would you pick?
The answer is simple, I'll store my private keys in my same old SanDisk flash drive because no one knows that I own 2000 bitcoins. I was storing my private keys on SanDisk flash drive for years and I never had any issues with them thus why go for the military grade vaults or nuclear bunker? are we at war? come on, men, that is just another way of wasting money, period!
Idk if this is another way to waste money. For a considerable amount of BTC worth millions of dollars having that piece of mind might not be the worst idea. yes, you might need to pay a substantial for such high level security but owners of thousands of BTC surely won't find that too high when the stake is several times higher. I suppose another way to look at it, is from a personal point of view. Some people prefer simplicity, no headaches and thus bunkers are the best option for them.
Securing the key even of a piece of paper or a flash drive are all reasonable approaches but it is up to the user to decide how they want to play their fate!