As for me, well, I think it was best said in "The Lion King." 'Tis the circle of life. . .life MUST end for life to continue. Also, just because a lifeform doesn't have a "face" or "feet" doesn't mean it doesn't suffer pain and death, there was a study done in a midwestern university about it. A psychology professor posited that if animals could feel pain, why not a plant? Several of his students, (with a knowledge of botany, no doubt) argued that plants don't have the receptors to record such stimuli. So, using an EKG connected to one of his bamboo plants, the professor plucked a leaf from it. When he did so, the meter jumped. Fascinated, the students watched as he plucked another, and the meter jumped again. A sceptic in the class objected, positing that the physical shock of physically pulling the leaf off was registering on the EKG, as would a shockwave.
Interested, the professor proposed testing his hypothesis further, by measuring a reaction with no direct stimuli. He had his students draw lots, and the the shortest had to go to the classroom after hours and "murder" one of the bamboo plants. That's right, he/she had to destroy, mangle, burn, uproot one of the plants in plain, ahem, sight of the other.
When it was done, the students were marched in front of the "witness" and when the "murder" walked past the plant, the EKG went berserk. . .
I was told that story in high school Science Fiction class, and I've yet to find any data corraborating any part of it. Still, it does point out that the salad you're eating used to be something's offspring, and probably something's progenitor as well...Circle of life.