I think because so many feed raw here, people tend to not hear that there's another side (except from vets who don't explain or discuss). That's not doing the newbies any favors. It's important to know both sides and make reasoned determinations, not follow fads or do things just because someone on the Internet says so. Whether you feed raw or kibble, you need to be very thoughtful about that decision. That leads to much more productive conversations with vets (or even potentially finding a vet who will HELP you with nutrition goals).
The official AVA position (a/k/a the "party line" position among vets) is opposed to raw feeding. You can google to find their position statement. In the U.S., the CDC has also chimed in with opposition. Once you solve the balanced diet issue, the "party line" position flows from the risk of infectious disease -- though the evidence seems to flow mostly toward a risk for people
handling the meat and
the dog poop, with a much smaller risk of infection of dogs themselves. In other words, it justifies being very careful in your handling of what goes in and what goes out. Having a big box of disposable gloves, a canister of disinfecting wipes and/or a spray bottle of 10% bleach solution can eliminate nearly all the transmission worry.
Contrary to what sometimes gets posted here, dogs CAN get salmonella. My vet has treated several cases of it, though it's rare. HOWEVER, he admitted to me that every case he treated came from a kibble fed dog. In other words, dogs can get salmonella from kibble too! So the handling risks associated with raw may be in that bag of kibble too -- people tend to just be less aware and less careful in their kibble handling. If a blob of raw meat falls on the tile while I'm preparing a bowl, after a dog slurps it up, I'll grab a disinfecting wipe for the tile. Kibble....? A dog nibbles on what fell and I may not even think about the tile.
My vet is an evidence-based vet. He's reviewed the AVA materials, and he's still fine with clients feeding balanced raw as long as they practice safe handling (disinfect cutting boards, bowls, surfaces, etc. regularly; practice good hand washing, etc.) AND they keep the meat frozen 2 weeks in the deep freeze prior to feeding. That long deep freeze kills most of the worst pathogens and makes it far safer.
I would (and did) cook it for a dog with a compromised immune system though. Once the dog is very sick and the immune system is wrecked, I am not comfortable introducing potential food-borne pathogens (even kibble makes me uncomfortable with some of those dogs).
Certain raw feeders do no favors to the case for it by making outlandish, scientifically unsupportable claims (like it cures cancer, protects against heartworm disease, or cures a host of other diseases -- claims that have been posted here from time to time or in poorly researched natural health periodicals). Those nonsense claims bolster the "party line" case against it. So set aside all the nonsense about it being a cure-all. It's not. It just simple, clean food -- IF you are sourcing the meat from good sources.
What can it do? There's no good research about longer lives, lower cancer rates, less dental disease over time, better coats, or any of the other things we hope for. That research doesn't exist. Nor is there research that it doesn't do those things. It might -- no one really knows. There's lots of anecdotal reports about those things, but no double-blind, controlled, peer-reviewed long-term studies comparing complete, well-formulated raw diets vs. good-quality kibble, fed from puppyhood through death. It's can be effective for solving food allergies by simplifying the diet. It gives you more control to keep contaminants out (note all Moms2GSDs recent posts about recalls of kibble and canned food...). It's highly digestible and biologically appropriate (so you're working with evolutionary biology rather than against it), so you may get better digestive health.
I have 2 kibble-fed and 1 raw-fed allergy dog. The raw fed one gets a base-mix to balance out his meat because I don't have time for nutrition spreadsheets. Both the raw and kibble-fed are very healthy. The raw-fed dog was a VERY sick allergy dog who needed to get off kibble, and getting him on simple, clean food probably saved his life.
If you're interested in an in-between option, you can get complete, balanced diets with a base-mix. There are lots of threads about them -- you add raw or cooked meat to a porridge (reconstituted from dry mix).
This summarizes some of the research and the "not much is really known" position:
More Evidence of the Risk of Infectious Diseases Associated with Raw Pet Foods | The SkeptVet