Mornings seem to be better hunts (the sun rising, the woods coming to life, the deer interested in something other than eating) and give a better opportunity to recover deer that have been shot. It also gives me the chance to decide how long I want to stay in the stand hoping to get a shot. Unless I have shot a deer, when I get out of the stand I can go back to camp, visit with my buddies, get a bite to eat and relax. If I have any problem locating the deer or if I find the deer and need help getting it back to camp, I can call my friends and have them come help me, or I can help them if they have shot a deer. Doing all that in daylight is much nicer than trying to find my way around in the dark. The two biggest drawbacks to morning hunts are the colder temperatures and having to get out of a nice warm bed much earlier than I prefer.
All that said, I have killed many deer on evening hunts and love being out during the magic hour before it gets too dark to shoot. I can say that my hunting buddies and I have failed to recover far more wounded deer on evening hunts than morning hunts. That is one of the most disturbing aspects of hunting and one that I do my best to avoid.
Allan