People should be enaugrcoed to rescue more publicly, but you can't expect breeding to end all together. Rescue dogs often have behavioural issues that first time owners wouldn't be able to cope with and the dog still wouldn't be happy/end up going back to the shelter. Dogs still need to be bred for service e.g. guide dogs that have perfect temperaments and they need to be trained from puppies. Those with allergies need low dander/shedding breeds that aren't always at a shelter.