That's a horrible experience to go through. I hope your brother is ok after that. I come from a family of hunters, and I know that any one of my relatives would be devastated by having to see such a sight. We hunt for food and to keep the population down, but no one wants to see a baby animal suffering. At least he did the kind thing and put it out of its misery.My brother did custom cutting for a few years and had to put down a poor deer foal that lost its legs to the cutter head because they instinctually stay put to wait for mom. Regrettable and tragic death is a part of life, and when life gives you regrettable and tragic death you're better off making hamburgers with it. (not the foal, but humanely raised meat animals)
It's sad when things like this happen, but death is just a fact of life as you said. Something has to die for something else to live, and I would rather eat the hamburger than pretend my way of life is somehow not hurting any animals. Some of these vegans are so delusional and just want people to pat them on the back for doing absolutely nothing. Must be nice to be able to exist in a bubble.