We just are not accident prone. People have traveled the world for thousands of years without accident insurance. Did Walt Disney have travel insurance? No. We are not guided by fear. We accept that there are risks in life. We have no health issues. We are also pretty self reliant. I’m not going to worry about trying to collect 10k from a crappy insurance company in the off chance one of my kids gets hurt. People shell out much more than that in extra insurance costs over the years. And I am definitely not going to blame Disney or whatever company if my kid gets hurt while they happen to be on a ship.
A friend of mine went on a European cruise with her parents. Her DF had a heart attack. They had to stabilize him before they could evacuate him, and their family of 5, back to the US. Not being accident prone doesn't stop things like that from happening.