My purebred dog is spayed and has never bred. I am being responsible with my dog and ensuring there are no unwanted puppies.
I feel no responsibility to adopt a dog from irresponsible pet owners.
I prefer a purebred because I know the characteristics and temperament I will get. With a rescue, it is a crapshoot. You may get a wonderful dog or you may get a dog with issues.
Purebred dogs can be a crapshoot too - you can certainly expect a particular size and conformation, but you cannot reliably expect a particular temperament especially where there is so much irresponsible breeding. The AKC and other organizations are a joke - they sell their accreditation without putting any resources into regulation and many of the breeders they sell it to are not breeding for the betterment of the breed, but instead for the $10-30k they can profit per litter depending on their marketing skills and the market for the breed they are producing.
I've never met an aggressive or hostile lab. Nor a german shepard that was not extremely territorial and protective.
Labs bite kids all the time - look up the stats on dog bites in this country. Labs are a hugely popular breed so statistically it stands to reason they will account for a substantial percentage of dog bites.
ALL DOGS ARE UNPREDICTABLE. ALL DOGS. ALL BREEDS.
Cute little ankle biters are the most likely to BITE - they just don’t usually kill because of their size. They can disfigure a child’s face for life, though.
The only problem with dogs - purebred or mixed breed - is the humans who raise and handle them. A mixed breed dog is every bit as good as a purebred and very often healthier physically and thus generally also leads to better mental health as well - a sick dog is more likely to have temperament issues, just like sick people more often suffer mental health issues.
But some of you idiots will keep harping how your purebred is better until the end of time. Says more about you than about your pooch.