Buying none of it might put you in a bad financial spot if you have an accident. Here are some factors to keep in mind. If you don't have your own collision coverage, buying the LDW is a good idea. If you don't have collision and comprehensive insurance and you're renting a car, it's a good idea to purchase the LDW or CDW, whichever your rental company offers. You might want to buy the waiver that offers you the broadest protection in this situation.
Rental companies have several levels of damage waivers.
Of course, the broader the coverage, the more you're going to pay. All of Hertz's LDWs are deductible-free. Just remember that you have to cough up your deductible if the car is stolen or vandalized, or if you crash it. In this situation, you won't have to purchase any insurance from the rental company to get some liability coverage. If you feel that you can get by with just the bare-bones policy, you won't spend a dime on liability insurance.