Not at all.
Some dogs are bred to be hunters.
Some are bred to race.
Some are bred to fight.
Some are bred to be fashion accessories.
Dogs that are bred for performance (hunting, fighting, racing) are healthy dogs.
Dogs that are bred for a specific appearance, have and continue to pass on genetic flaws, all just to indulge the owners sense of aesthetics.
Pit Bulls usually live for at least 15 years.
While some of these genetic freaks, like English Bulldogs, only live for 8-9 years.
Bulldogs are so screwed up, genetically, that they have to be born via Ceasarian section. Then they live painful, wheezing lives as limping, asthmatic, freaks.
If you like a breed, you have to respect where it came from.