I am a hunter, but I feel the need now, as I have on occasion here on the escapist, to qualify my answer. I am a meat hunter. My family hunts for food, not for trophies. Our view of it is that as long as you take what you kill, and use it, its perfectly acceptable. Now while I do feel this way, thats not going to stop me from trying to get a huge bull elk if I have a Bull tag.
On the subject of Trophy Hunters, I find what they do very unethical. Hunting an animal merely because it has a large set of antlers, or some other thing that trophy hunters prize, is stupid. I am most offended when my family and I come across a rotting carcass, that some hunter carelessly left behind, taking only the cape and the antlers. If you don't want the meat, have it processed and donate it to a homeless shelter or something, they would gladly take the food (most likely). If you talk to true hunters ( people who are born and raised by hunting families, not those rich farts who think it would be cool to have a mount in their den) you will find that they are some of the most ecologically minded people you will meet. Hunters are inherently conservationists, its part of the territory. We are concerned about the future of our wildlife, and work to preserve it.
As for odds, you really do not understand how hard it is to actually find these animals, let alone see one for a long enough time to get a shot off. Trudging up and down hills, ( if you need an ATV to hunt, you shouldn't be hunting in my opinion) sitting in the freezing cold for hours on end, then trudging back, is far from easy. When I go elk hunting, the animal has a 95 percent chance of getting away without ever being seen by human eyes. That is much, much higher than your average meat cow has of surviving(0%). when hunters stay within "Fair Chase" animals have an extremely high chance to escape.
[link]http://www.boone-crockett.org/huntingEthics/ethics_fairchase.asp?area=huntingEthics[/link]