You're right Brownsugar, you have to have a cc in order to rent a car, reserve a hotel room, etc.....And how do you anticipate how much an emergency is going to cost or when it will arise? I think that is why it is called an emergency. You could technically rent a car or reserve a hotel room on a debit card, but I can tell you that here in OH they will put a $300-500 hold on that account, and that is a pretty big hold to put on your account, and the hold isn't usually released for 3-7 business days.