Is it necessary to buy travel health insurance for my trip to South America? [closed]

Mere mortals usually think that travel-insurance is a really really good idea.
But it is never "necessary" if not required as a condition of travel by some third party.

If

• You are a risk taker

and / or

• You are immensely excited by the prospect of having to self fund long stays in hospital, long term disabilities, liabilities for damage caused in error to property or people, treatment for exotic diseases, loss of fares or deposits, unexpected accommodation costs, kidnapping (insurance may or may not relieve you of this thrill), and more,

then

• if this excitement, for you, exceeds

  • the consequences of them happening x the probability of them happening,

then

• no-insurance may well be the way to go.

Otherwise...

• Hence: Mere mortals usually think that it is a really really good idea.

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A personal experience:

On a visit to China I was bitten lightly by a friendly factory guard dog while playingh with it. (We were and remainded the best of friends).

I was introduced to the logical considerations of potential Rabies infection and its relative prevalence in China. I underwent a course of injections - 1st in China, two more a week apart as I subsequently travelled in Australia. Final one in NZ on my return home.

Total cost the better part of $1000.
Only on returning home did I find that my travel insurance was invalid! (Free Gold VISA travel insurance does NOT apply to travel with a business component).
Had the dog actually had Rabies or if it did have and the injections did not work then I could have died rather unpleasantly (insurance helps only a little) or needed very very substantial ongoing care. Rabies kills almost everyone who is actually affected so maybe not the very best example. Choose eg tetanus and try again.

Paid travel insurance would have cost me about 1/3 of the Rabies treatment costs.