The problem is that even if you fireproof your house, your house can still burn down. It makes more sense to fireproof your house AND have homeowner's insurance

The problem is that even if you fireproof your house, your house can still burn down. It makes more sense to fireproof your house AND have homeowner's insurance. You can't lower your risk of negative events to zero, but even so, that's not the point of insurance. The point is to have a safety net should some improbable event happen. I don't care how fireproof you make your house, it could still burn down, and you don't want to be without insurance when it does.