This is a good point, but for us still doesn't make sense.
To get flight insurance it was $20, incase things change.
We are Canadian, so any necessary hospital visits are covered by our government health insurance.
On top of that we actually have
travel insurance through CAA (same as AAA), but, even if we didn't we would still be covered by our national/provincial health insurance, although we would have to pay out of pocket and have it reimbursed.
I can see how it would work for some people, if like you said it covers health issues as well, I would totally buy it if we weren't otherwise covered.
But otherwise, just can see it ... good that its offered though.