Honestly, I wouldn't be concerned about that. Insurance is nothing more than free revenue for the carrier.
I'd send close to 500 packages a month to destinations all over the world, and tracked items almost never go missing.
For those that do go missing, it's always to a few hotspots that I would simply avoid if selling an item this valuable (pretty much just Brazil and South Africa now; Russia and Italy are much better than they used to be).