Right n, Chuck! The adult deer will most likely survive, being stronger, more able to kick weaker deer away from food sources, and reach vegetation that fawns can only stare at. The fawns are the ones who die in winter, and they are the ones in whom Nature has invested the least. The older does teach their offspring the hows of survival, and are valuable assets to the herd.
I will shoot ol' milk-lip in a heartbeat, and let the doe go. Where I hunt, this year's crop has lost their spots, but if they hadn't, a spotted hide is a very pretty thing to use on possibles bags and the like.
I, too, am subject to those softenings of the heart, and a slackening of the bowstring when watching family dynamics. Compassion is never a bad thing, if you have a good supply of groceries. That being said, my first bowkill was a doe fawn. As was said before, it is a complex thing, this taking a life, and a voice will tell you whether this is a good kill or a heartache.
Killdeer