There's no one single answer, it depends on the dog, their digestive system (and teeth in some cases) your lifestyle and food storage options and what you can/can't do/don't want to manage on a daily basis.
I'm a vegetarian, have been for 30 years and really can't stand handling meat, but my eldest dog is raw fed, as were all my other dogs. It's a pita, because we don't have and can't fit a chest freezer, but we've been lucky with a local butcher (until recently when he rather selfishly decided to retire
).
My pup on the other hand is currently being fed a high grade, grain free kibble, because he has had serious digestive issues, was seriously underweight and I feel happier knowing he's getting everything he needs in one go, having an easy feeding ratio/formula takes more of the stress away when you are feeding 6-8 meals a day and we still need him to gain more weight.
He will also be going raw when he's older though, assuming we can make friends with the new butcher (old one used to let us buy the food and store it in his freezers, then pick some up every weekend).
You should just do whatever you feel is right for your dog and your lifestyle etc and not be swayed by what other people do or don't do.