It wasn't before, so it probably wouldn't serve as one in the future. The issue is that people aren't very good at estimating risk.
I'm young, healthy, and no one in my family has been in a serious car accident/gotten cancer/had a heart attack in the last 15 years. Obviously that happening is a low risk compared to the financial penalty of maintaining insurance today, so why should I worry? Besides, I'm sure I can get some kind of plan from an insurance company if something bad does happen[1]
[1] I'll be sure to look into the feasibility of this statement as soon as I finish all the other important things on my todo list...