Define “insane”?
Is the deductible very high, which usually results in premiums being artificially low? You pay less for the policy, and the policy is covering less.
Is the deductible insanely low, which usuaully results in premiums being artificially high? You pay lots up front for the policy, and the policy covers more.
But it really has nothing to do with insanity, unless your question is about mental health exclusions.