Thats a common occurance for me. I believe it all has to do with how much interaction the deer have with humans on a daily basis. The deer in my area are constantly seeing, hearing, and smelling humans and over time they have let up their guard a good bit. Scent control, camo, and noise aren't as critical of a part of hunting as other areas. I have been out riding my quad on the property and I can drive past deer at 15 yards and they don't have a care in the world!