I did bait deer - Once. My 84 year old dad wanted to shoot a deer from a particular blind we had built for him. So we put out some oats. I'm kinda glad that the deer ignored the bait. He got a shot later at a different spot anyway. I just don't believe it's necessary to bait deer to have a good hunt. Seems like a short cut to me. I don't have anything against those who do, but it doesn't seem quite like fair chase to me.
Now for some shaky logic, I think that the only viable way to hunt black bears in our area is over bait. I've tried many other ways, never even saw a bear unless bait was involved some how. So I'm OK with baiting bears but not deer. Doesn't make sense but there you are.