Sorry but, I think it is pretty arrogant to say a breed will meet it's demise without professional breeding.
The amount of time that breeders have been in the picture of any blood line or species, compared to the amount of time they were not there in the evolution, of a breed or line, is like comparing a speck of flyshit to a 50 gallon drum of white rice.
Dogs, and every other species, including man, have been doing it,and inbreeding,since the beginning of time. No species will meet their demise from breeding but, rather, they will meet their demise by lack of breeding. You know, the rainbow coalition thing, two innies or two outties trying to breed, that is the real problem here boys.
I'm sure you do great with, and by, your dogs Matt and I mean no disrespect to you in what I have said but, dogs will be dogs, even after you and I are gone.