I have 22, 19 and soon to be 18 year old girls. So far I have evaded becoming a grandparent. I will however bring up the fact that it ain't just boys going to the emergency room. We've had a compound fracture of the humerus that needed emergency surgery, that was a couple of sleepless nights, an obscure, but life threatening eye infection, numerous asthma attacks, two cases of anaphylaxis requiring ER visits as well as the normal childhood injuries and predicaments.
Parents are not wired to survive their children. I share your concerns and sincerely hope all your kids, and grandchildren, are at your funeral.