re: Rental cars - do you ever purchase the additional insurance package?

The one time I purchased it was when I had to get a rental car a few months after the lone auto accident I've ever been in.

I just didn't want anything else to count against me, even if my credit card may have covered it.

Wasn't cheap, either - I wanna say it was close to an extra $100, but it provided 7-figure coverage at least.