Two suggestions: First, you can't have enough insurance. The "minimum" required (for automobile) by state law can be a joke. Many of these won't cover the cost of a high priced SUV, let alone extensive medical expenses. Second, consider an "umbrella" policy. That takes over after your regular policy is exhausted. We pay $ 40.00 per month (extra) for 2 million in coverage, and that includes civil law suits, property claims, etc. I would suggest a starting place for car insurance is 500,000.00.
And be sure and research the company you buy from. Having a low rate saves money but if you have a claim and need to fight with them that's not much of a savings. Now that I've said that, one other consideration is your asset base, what have you got to lose? If you're living in a rented apartment on ss with no savings it's unlikely you'll get sued since there's nothing to gain. So the bottom line is simply this. You carry insurance to protect your assets. What you have for assets, and how much you want to spend to protect them, is an individual decision.