Tell your husband to educate himself on the breed. They were originally bred to take care of children. They are called the Nanny Dogs, since they are great with kids.
I have a true story, so pass this onto your husband:
I was attacked by a great dane when I was a kid, so I fear dogs, especially large ones. This guy litterally picked me up and shook me. I've still got the scars.
I use to live next to a house that had two HUGE brindle pit bulls. They were use to me as they'd be at the fence when I came home, etc. They were always playful and rarely barked unless something was going on. The owner was an older woman who was the sweetest thing.
One day I come home and the female is standing in the middle of the street. I had to get her back into her yard, but was still afraid.
So I walk up to her, and she's not moving (not good), but she starts wagging her tail alittle (getting better) and so I walk up slowly and take hold of her collar and she doesn't move (getting bad again). I try to pull her back to her yard and it's like pulling a house. She just will not move. And she is HUGE, but beautiful. And looking at me with these big eyes, her tounge hanging out. Kinda goofy actually.
Finally she moves, but it's because she wanted to. When I got her back behind the gate, I finally sat down and started shaking. But I had to help her.
Not ONCE did she ever hurt me in the years I lived there.
Yes, they are bred now for fighting by a select few, but getting close to her like that, I can see why.
But the history of them shows they were used as family dogs, with a rich heritage.
Get good obedience training and he'll be fine. They are amazing dogs and if raised correctly, are wonderful family pets. It's too bad that they get the bad rap they do.