would you have a problem with someone using them for food?
To me, it has nothing to do with the animal's demeanor. I know people who've raised ducks and chickens as house pets, but I would eat those delicious bastards in a heart beat. Roast duck is probably one of my favorite foods and those little fuckers are adorable.

I've never eaten dog and wouldn't be able to stomach it without throwing up, too many connections grilled into my brain to let me swallow a piece.But hey, they might taste delicious. And in some parts of the world they don't look at these animals as domesticated pets.
My wife's parents ate dog a few times back in Vietnam because that's what they knew. No internet, no TV, only local radio and newspapers. No one there took in pets, fed them, wiped up their shit and took care of them the way we do in the Western world. They thought it was nuts when we got a pet dog. Dog wasn't a super populate item, but it was consumed. They probably eat way more in Korea and China. China loves eating really eccentric, gross animals because of their roots in Traditional Chinese Medicines.