The hardware wallet generates your private keys offline and they never leave the device, making it inherently more secure than any other wallet currently available for Cardano. You would be able to use your Ledger/Trezor device safely even on a hacked computer (e.g. Internet cafe, hotel lobby) to send a transaction, whereas a regular wallet's private key could possibly be extracted, making it possible for your crypto assets to be stolen.
How is using a Ledger/Trezor more secure?
