A longbow hunter we met on the way in to hang my stand said that if you bowhunt long enough, eventually you will wound and lose one. I think that applies to every sort of hunting implement. He lost one in the rain just this season. All you can do is practice until you're as good as you can get, exercise restraint when taking shots, and learn to track, which takes time, interest, and patience. Still, sometimes stuff just happens, even when you do everything "right". Every time I've lost game, even small game, it's galled me for days, even years.
