Travel insurance is especially terrible, because a lot of the time it's a pretty substantial premium, and actually filing a claim on it is a HUGE PITA.

I worked for a traveler insurance company before, and we denied most claims that came in. People would buy insurance on a $100 concert ticket, paying a $10 premium for the insurance, then when they'd go to file the claim, we'd require a doctors note, so now they also have to cough up a $20 copay and a whole afternoon just to get a note saying "yup, this person is sick". And that's just one of the many ways people got fleeced. During COVID, a lot of travel insurance claims got denied because illnesses resulting from pandemics aren't covered in some policies as well