Same way I feel about them pulling my driving record.
Both are private information, and both are shown to be an accurate indicator of potential future loss .
You are not required by law to have insurance , only people who want to drive on public roads are required to have insurance. There are ways to avoid having auto insurance - like , do not own a car and not drive.
Sure, it's convenient. But you are complaining because they were denied on the basis of low credit score - the next guy claims he was denied based on your driving record .
It is not foot the bill - it is to predict future losses. And people with credit scores under 550 are about 7x as likely to file a claim that people with scores over 700. Like the guy with two DUI , it is 10 times more likely to suffer an accident at the fault.
Insurance companies in most states have the right to pick and choose the customers are less likely to file claims.