Of course you have a right to determine what risks you want to take on in your home, regardless of how irrational or nonsensical they may be. There’s a chance you might get salmonella poisoning from eating undercooked turkey and stuffing, but I’d bet the host would incorrectly determine that to be a smaller risk and still serve turkey and stuffing to his/her guests. That’s your prerogative. However I’m just as justified to point out how small the relative risk is and how unjustified the homeowner’s absolute rule of no guns is. Still, I’d respect the homeowner’s request by not carrying or not going. It’s nothing I’d flippantly disregard and decide to carry anyway.
And regarding kids obtaining properly concealed firearms, I’d like to see a few examples or stories of such a thing, because I’ve never heard of it and it doesn’t make sense. Kids are much more likely to grab unsecured firearms from dad’s closet or mattress rather than somehow unarm an armed person (something they wouldn’t even know if it was properly concealed to begin with).