>> Do people really not take into account stuff like children's education, cost of living expenses per additional member of family, emergencies, black swan events?

If you have a life insurance policy, and Aflac, you'll get a ton of money from having cancer. Aflac will pay cash for every hospital visit, every procedure, transportation (not pay FOR it, your health insurance will do that, but give you cash on top of that) and then the life insurance policy will cash out when you pass away.

Your family will miss you but at least they won't have to worry about paying for stuff.