The whole 'what meat would you eat' thing is oh so cultural. The reason why so few eat dogs is we, the human race (including the Koreans) more or less adopted dogs back when we first stood up and started drawing on cave walls.
But different cultures have different approaches to their protein sources. So you can go to one place and find fried locusts and weevils on the menu and in another roast dog, mice and starlings. For the most part those cultures which see certain animals as pets tend not towards eating them.
Of course, historically speaking, if push comes to shove we will all eat just about anything. During many wars, inc WW1 and WW2, plenty of Russians and Europeans ate cats and dogs. Some (a lot) had been their pets. But they were starving so they ate what they needed to.
In terms of protein most forms, including insects, are as good as beef or close to it. Some are a bit higher in their protein content.
One of the issues many have with the dog thing is how they are treated. But if your culture sees an animal as food and not a pet then they treat the animal differently.