Unfortunately, while pit bull type dogs only make up about 6.5% of all dogs in the U.S., they were responsible for about 66.5% (284) of all fatal dog attacks (408) in the U.S. between 2005 and 2017. Runners up were rotts (45)10.4%, german shepards 4.6% (20), mixed breed 3.9% (17), american bulldog 3.5% (15), mastiff/bullmastiff 3.2%(14), and husky 3%(13).
source:
U.S. Dog Bite Fatalities: Breeds of Dogs Involved, Age Groups and Other Factors Over a 13-Year Period (25 to 217)
Not much has changed since a 1979-1998 study...
https://www.avma.org/Advocacy/StateAndLocal/Documents/javma_000915_fatalattacks.pdf
The point being, and its unfortunate, pitts have become the assault rifle of the dog world. Neither should be left unattended, in the hands of children, or in possession by a felon, mentally ill person, etc... that probably should be said about any dog large enough to cause fatal human trauma, but statistically, pitts stick out more than 6:1 over the next highest breed when it comes to human fatalities.
6 to 1.
If pitts were a firearm, they'd be recalled. If they were firestone tires, they'd be recalled. If they were airbags, they'd be recalled. I can't see a reason for anyone to logically own one, other than adopting one from the shelter out of kindness to live out its days in peace and not propagating the breed any further.