Many people choose not have travel insurance for one reason for another. Perhaps they think they are covered or perhaps they found it too expensive and wanted to spend the cash elsewhere.
Image: © Marcelo Rabelo/ stok/xchng
But certainly the chances are if you don't buy it you're likely going to need it. For a trip far away from home certainly you really should have that piece of mind. It can cover you for some of the most vital of eventualities. Such as healthcare, which depending on the injuries could get quite expensive if you needed repatriation to your home country. If you are going abroad to do something particularly high risk this this is more of less going to be essential.
Such as hiking in the jungle or skiing, these activities do some with considerable calculated risk. Some countries do have a health care agreements with each other, and EU citizens do have the health care scheme, but these are only applicable to basic health care while abroad. If you have a pre existing medical condition certainly cover is advised too.
Of course travel insurance covers more than just healthcare, if you get your belongings stolen while travelling or lost baggage it can help you out there too. It is something that we might never use but if you don't have it then you'll probably wish you did have it, but by then its too late.