Nobody is surprised when a border collie tries to herd kids, when it tries to herd people, and other animals
Nobody is surprised when a pointer, points.
Nobody is surprised when a Labrador retriever, retrieves or a rat terrier finds and kills rats.
Dogs are bred and have been bred for ages to be and act certain ways. Pitbulls were made to kill, to maim, to destroy and not let go.
It’s not their fault obviously, they didn’t make the choice to be the way they are anymore than a border collie asked to herd sheep. It’s just what they were born and bred to do. We need to accept this, we need to understand this, and because of it we need to get rid of this breed of dog, both for their sake and ours.
They are dangerous animals, and people who defend and keep them are no better.