Well, I think we've made the following points - Less that Lethal isn't NON lethal, and the users of 00 Buck don't care if they kill their wife and kids in the other room.
No, I don't really believe that either.
My previous points made - and corroborated by others - are that rubber rounds are still lethal, you can get them in "Claymore TYPE" munitions, and even rubber slugs. I sent some home to the kids from GTMO. The stuff is out there. As described - and again, corroborated by others - you better be trained.
Which leaves the last off-topic point - the use of 00 buck in the lightly built frame homes most of us live in. Most pro's don't use it - think apartment house. Liability of innocent citizens is still at stake when clearing the building isn't an option. Please consider your family, too.
Which is better - a lethal load of birdshot with few penetrations in the kids bedroom - or a load of 00 buck and godknowswhatdidyoujustdo?
Back up and think further - you have the same problem with most other rounds, right down to .22. Home defense is a lot more complicated when you factor in your own rounds being just as lethal to friends, family, and pets as to perps.
So, I'm being up front - don't use 00 Buck for home defense. Birdshot is better.