I didn't say it was a good idea, I was just saying that you get double the projectiles by using double tap.
...or use a full size magazine in a compact gun.
I beg to differ. G26, 10+1. G17, 17+1. So you're either going from 10 to 17, or 11 to 18. Still not quite double the capacity.
Like I said, I can see a place for the Judge. I think it would serve good as a dedicated nightstand gun, assuming you have a fairly small home and you don't have any innocents in the path of the weapon. A long gun would be better, but if you do what I do - lock the handgun in a small safe near the bed, and the long gun in the closet - it would be a good option to grab.
Do I think it's better than the 9 or the .45 at that particular application? Honestly, I'm not sure. The 9 or .45 would allow you to get off more shots rapid-fire, which means if you miss completely, you have another chance sooner. They'll also kick less, be more "family friendly" (both in terms of limiting the potential for friendly fire, and in being easier for your wife/kid to use), but I think that the .410 essentially offers half the wound channel potential of a 12-gauge using 2.75" shells, albeit with slightly less penetration.
However, I will also agree that the standard cartridge is better for more accurate shooting, and because I would prefer to limit my active calibers, I would much rather have a 9 as my desk gun. That's not to say I would deem anyone to be irresponsible or wrong for choosing a .410 revolver as their nightstand gun.