That is not the correct question to ask. I think a child's life is absolutely worth the cost. In fact, I would never, ever, let my child fly without a car seat. I think you'd be crazy to do so. My point is that many parents don't feel this way. We make these sorts of choices all the time. Cars come with three point seat belts, planes come with two-point seat belts, except for the crew. We would ALL be safer if we had five point seat belts, but this would increase cost, and so we choose not to do so. I don't think we need to legislate things because parent make different choices than I would.

I was allowed to each Froot Loops and Sugar Smacks growing up. My parents certainly did not want a law passed because doing so increased my risk of cavities.

I am an economist, and there does not seem to be a reason to legislate people's choices just because they do not agree with you or I.