bobmeister: Gold card insurance is probably okay. After all only 10% of people claim, so you're okay if you are in the 90% who don't.
But then, you'd also be OK if you didn't have insurance at all!
Maybe you can give an example of "comprehensive" insurance and the exclusions for the OP, so he can compare his free insurance and decide if it's worth the upgrade. I wouldn't mind knowing myself. Perhaps I've let the bank lull me into a false sense of security!