Well, in Diane Duane's YA fantasy books, there's a sentient tree alien who gets totally grossed out/horrified by Earth humans eating vegetables.

But Terry Pratchett's got a description of heaven from a cow's point of view in Feet of Clay, and it involves horseradish and roast potatoes.

Not all food is already dead - most root vegetables keep growing (as in they sprout, as opposed to get bigger) if you leave them long enough.

I'm tempted to go with the idea that apples, for e.g., would consider it a good thing to be eaten, because it fulfils their purpose in existing.

*goes quietly insane*