There is some convenience and safety. If you decide you want to sell or transfer some funds you don’t have to type in your seed phrase into your potentially compromised computer, instead you just plug it in and press a few buttons and voila. Generally you would have a hardware wallet and the seed phrase written down or engraved somewhere in a different area for backup.
If you’re holding more than some pocket change consider a hardware wallet.
Its difficult to get engraved metal to perform calculations
There is some convenience and safety. If you decide you want to sell or transfer some funds you don’t have to type in your seed phrase into your potentially compromised computer, instead you just plug it in and press a few buttons and voila. Generally you would have a hardware wallet and the seed phrase written down or engraved somewhere in a different area for backup.