A lot of people don’t get travel insurance, as we tend to think nothing’s going to happen. And most of the times, that’s right. In fact, I have never used my travel insurance. However, I’ll still get one for my next few months trip, and if I take a one week trip to New York or Belize, I’ll buy one as well.
When I traveled to Peru, I didn’t get travel insurance. It was due to lack of awareness from my side. I took a couple of rides in boats (even though, I can’t swim), took a 16 hours bus, walked in Machu Picchu, did sandboarding, thought I was going to die in Cusco because of a diarrhea that only lasted a night and the following morning, and left my stuff at hostels while I went to explore new places. I was lucky since nothing went wrong, besides that hell of a diarrhea (that was cured very quickly without taking any medicine), but a lot could have gone bad.