I've only ever lost one, and that really sucked. The deer survived, saw him again three weeks later, but it still was pretty disheartening before I saw him again. Even on a good shot, I do feel a bit of remorse, but i think that's natural. On a bad shot, I'm more angry at myself than I am feeling "bad" for the deer though. Sorry if that sounds selfish, but that's the way I feel. I know that I am fully capable of making the shot, and have made plenty, so if a bad one happens, like it did, I was really upset with myself.