Happens to me all the time.... or I think of all the crap I have to do if I shoot that deer, and do I have time to deal with it right now. I guess I sit in the woods just to see what might happen. If a huge monster walks by, I don't mind forgoing any possible plans that may have been in the works. But to shoot a doe, gut it, skin it.... unless I have nothing else planned or it is real early in the evening or morning, I am more apt to let them walk. I love to hunt, but I guess it isn't to shoot anything, more to see what I may have the chance of shooting. I like venison but I don't eat it as often as I should and therefore am not as prone to get my dinner asap. But I completely agree with you if you see the same deer night after night you somehow grow attached, and also you are right, a buck will be in the area sooner or later. good luck