Earlier quoted context omitted.
> Your card is irrelevant. My card is very relevant. If someone steals it, they can use it but it doesn't impact me in any way except having to wait for the new card to come. If someone steals my bitcoins, it means they have a copy of my private key, and there is nothing I can do about it. Zich. Nada. Transaction fees pay for this insurance (among other things, but still).
You can have multiple wallets though. You can have a really secured wallet, maybe signed with a smart card (is it possible? If yes then it's pretty much impossible to steal, unless someone steals it physically.) and have a less secure wallet on your smartphone. Your smartphone plays the role of a "regular wallet" and you only have minimal amounts on it (like what you need for daily purchases).
...and that's how you get a bank.