Consider the following hypothetic scenario:
- I am offered an insurance policy that promises to pay me a fixed sum of 100k in case I get some very bad disease (say it costs 100 per month);
- I have 200k in a savings account, which I can withdraw at any time (say it is invested in some ETF, e.g. an S&P 500 tracker).
Instead of buying the insurance policy, I can simply "insure myself" by promising to myself that, if I get that bad disease, I will withdraw 100k from my savings account.
Is this argument correct? Is there any advantage in buying an insurance policy rather than insuring myself through my savings?
note:The insurance policy I refer to pays a fixed sum of 100k whenever one of a list of "bad diseases" is diagnosed. It is independent of actual expenses made