Utilize your financial knowledge, give your answer or opinion to the input question or subject . Answer format is not limited.

Why do people buy insurance even if they have the means to overcome the loss?
Your basic point is correct; the savvy move is to use insurance only to cover losses that would be painful or catastrophic for you. Otherwise, self-insure. In the specific example of car insurance, you may be missing that it doesn't only cover replacement of the car, it also covers liability, which is a hundreds-of-thousands-of-dollars risk. The liability coverage may well be legally required; it may also be required as a base layer if you want to get a separate umbrella policy up to millions in liability. So you have to be very rich before this insurance stops making sense. In the US at least you can certainly buy car insurance that doesn't cover loss of the car, or that has a high deductible. And in fact, if you can afford to self-insure up to a high deductible, on average as you say that should be a good idea. Same is true of most kinds of insurance, a high deductible is best as long as you can afford it, unless you know you'll probably file a claim. (Health insurance in particular is weird in many ways, and one is that you often can estimate whether you'll have claims.) On our auto policy, the liability and uninsured motorist coverage is about 60% of the cost while damage to the car coverage is 40%. I'm sure this varies a lot depending on the value of your cars and how much you drive and driving record, etc. On an aging car the coverage for the car itself should get cheaper and cheaper since the car is worth less, while liability coverage would not necessarily get cheaper.