I used to think like that, but I've become increasingly paranoid about software wallets and computers.
It's a simple matter of increased security.
In my opinion, regardless of whether you're using a hot wallet or a cold wallet, in my opinion the real issue is how to back up the seed phrase.
But how are hardware wallets more secure than open source self custody wallet?
Not all cold wallets are made equal, but a cold wallet that's airgapped, i.e., that never needs to touch a computer, be plugged anywhere, or go online, is by definition more secure than a software wallet on a computer that's online by default.
Then some have extra bells and whistles, like duress pin numbers, i.e., if someone is forcing you to input your pin number to unblock your cold wallet, you can input a fake one that gives the keys to a fake wallet, or a wallet with a small amount that you use as a decoy. And there are other things like that - antitampering, selfdestruction...
Look at the features of a cols card.
They are all best practices.
