Britz!
Nooooooo Lordy Lordy no you're not a horrible person!!
My dad is just like your hubby, he hated having dogs inside (but when we were in Nigeria we had 16, all rescued dogs... huge garden, so lotsa space..). So naturally we couldn't have ALL of them inside, but the weather in nigeria is really good (hardly rains) and they had lots of space to run and play and loaadds of trees for shade. What my mom finally convinced my dad to do was to keep 2 dogs in the kitchen at a time, so she trained them to know who comes in by turn and the kitchen door was always open
The 2 in the kitchen would NEVER dream of going further into the corridor or rooms, and the ones outside would wait patiently until their turn came to come in..
Here in my home now we have 4 dogs, 2 Rocky and Beau stay together all the time among us, and Sparky and Doggie (who always fight with Rocky, serious hate issues there...) stay in the back garden, but not allowed into the living room, but the kitchen door (adjoining the back garden) is always open for them so that whenver we're in the kitchen (and we're in the kitchen a LOT... i love to cook
) they can be with us, and also have appropriate shelter all year around.
That's why i suggested to you if your husband really is against the idea even after letting him read all this and still decides he doesn't like dogs inside you could always come to a compromise and get your rottie used to being among you in a certain room/s, and with the right training he'll know what the boundaries that you set for him are once you show him
I have no doubts that he's a well-loved dog, and it's GREAT GREAT GREAT that you got him from the shelter... WAY TO GO GIRL!