I guess I should have specified financial benefit.
You wouldn't pay someone else to insure a common vegetable, because it is so low cost that if it turned out to be bad, you would just buy another one (or have bought extra as your insurance).
When you buy from Walmart/Target/Amazon/Best Buy, they will try to sell you insurance for a $30 toaster or other cheap appliance. Again, most people will not buy this because they will believe the appliance will work sufficiently long or that the warranty process will be too time consuming, or otherwise decide that just quickly replacing the cheap appliance with another is the preferred way to insure it.
The insurance seller is a business and has to earn more than what they pay out for claims (or at least to make payroll if it is a mutual insurance company). Otherwise, they are going to lose money over time and go out of business. If you financially benefit from it, then you are either lucky, or had an information edge over the insurance underwriter.
Of course, if you get peace of mind from buying insurance, and count that as a benefit, then most insurance is beneficial in that case.