Fair enough. For me (in the US), I have a driver's license but don't own a car, I don't need ID often, but if I leave it in my wallet, there's a much smaller ch

Fair enough. For me (in the US), I have a driver's license but don't own a car, I don't need ID often, but if I leave it in my wallet, there's a much smaller chance that I'll forget it when I do need it (e.g. picking up a prescription at the pharmacy)