Can you just unplug your Ledger?

Excuse me, but I couldn't help but notice your Ledger hardware wallet. I understand that it's a secure way to store your cryptocurrencies, but I'm curious - could you just simply unplug it whenever you feel like it? I mean, wouldn't that be the easiest way to keep your funds safe, just by disconnecting it from any potential threats? Or am I missing something here? I'd love to hear your thoughts on this matter.