Lose One: Keys, Cellphone, Wallet

[Rizen]

You go to the store but find you've lost something very important: either your keys, your cellphone or your wallet/billfold/purse (wherever you keep your cards). It's lost and gone forever. Which would you rather lose?

I was thinking about this when I was at the store. Any one of these items would be devastating to lose. If you don't have keys, how do you drive home or enter your house? Losing your wallet would really suck too because you'd have to replace your driver's license, credit cards etc. And of course your cellphone has all your contacts and would be the most expensive to replace.

So which one? Which one?!