I'm fairly isolated here at Rotha Manor, so I keep a small revolver with me around the house and on the property...not so much in fear of 2-legged predators, but because the occasional 'Yote or unfriendly stray dog makes an appearance. I don't worry much about gettin' snuck up on. I'm a hundred yards from the main road, and the Huskies will let me know that a vehicle is on the way before the rear wheels leave the pavement...and that sets off the dogs that are inside the house. (Yeah. The Huskies come in at night and in bad weather or when it gets too hot.)
The sign on my door says:
"I have two Pitbulls and a shotgun. Are you real sure you wanna do this?"
And I do have two Pitbulls, among others.
Half the time, I don't even bother to lock my doors at night.
But no...carrying at home isn't crazy. With daylight home invasions of occupied houses becoming more common, it's only good sense to be prepared to meet the invaders with force. If they get in and take control, it's not likely that they'll be kind.