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Why buy insurance?
Regarding auto insurance, you have to look at the different parts. In the United Sates most states do require a level of specific coverage for all drivers. That is to make sure that if you are at fault there is money available to pay the victims. That payment may be for damage to their car or other property, but it also covers medical costs. Many policies also cover you if the other driver doesn't have insurance. The policy that covers the loss of the vehicle is required if you have a loan or are leasing the car. Somebody else owns it while there is a loan, so they can and do require you to pay to protect the vehicle.  If there i no loan you don't have to have that portion of a policy. Other parts such as towing, roadside assistance, and rental cars replacement may be required by the insurance standards for your state, or might be almost impossible to drop because all insurance companies include it to stay competitive with their competition.  Dropping the non-required parts of the coverage is acceptable when you don't have a loan. Some people do drop it to save money. But that does mean you are self insuring. If you can afford to self insure a new car, great. The interesting thing is that some people have more than enough assets to self inure the non-required part of auto insurance. But then they realize that they do need to up their umbrella liability insurance. This is to protect them from somebody deciding that their resources make them a tempting target when they are involved in a collision.