We're all aware of the risks of keeping our coins on online wallets and exchange wallets, but many of us still keep our coins on our own devices.
Are we keeping our devices secure? Its instinctual to not leave your fiat money wallet unattended in a public place but what about your bitcoin wallet? Are you leaving leaving the laptop you're writing your novel on the table at Starbucks when you go the bathroom? The laptop with your electrum wallet, your life savings.
Where does the line between paranoia and reasonable physical security meet?
It's never a paranoia to care extremely for something we deem very valuable. And as much as our bitcoin wallets are far from being pick pocketed, you are right that we should exercise strong caution not to lose it.
And as a practice, i keep copies of my wallet-related information not only on my device but also on the cloud where i make sure i have 2-Factor Authentication and the file to be password protected. I'm not really good with keeping printed documents and all (and afraid too that i will lose them or someone i know might be tempted to steal it from me should they see the document laying around), thus, i don't keep it physically secured. I have the habit of losing small items too so using a pen drive was never an option for me either.
And as much as i don't practice it, keeping those information physically secure is always advisable.