If you child gets a serious disease, can you take a year off from work to comfort him/her and give the best possible assistance in recovery? Can you take your child to private facilities that have individual rooms and private tutoring so they don't miss out on education? If the best possible treatment with a high success rate and a low-impact recovery is in Sweden, can you arrange medical transport on a plane to get your child there?

Insurance is just to cover not dying. Being rich makes it a comfortable experience.