If you think of it, there is no dying of old age for all but perhaps the top predators
Everybody gets eaten. Mice, rabbits deer, most fish.
Getting eaten alive ain't easy. Especially being grabbed by an osprey, taken to a tree top, and get ripped apart alive.
So when I keep a fish for the table and bonk it when it comes out of the live well. I don't feel too bad.
Have to admit I don't like using minnows. Casting those little guys thru the air with a hook in their mouths.