Was a solider once, was a cop once, run a security business and still like to get in the field from time to time, a firearms instructor and competitor and avid hunter. Needless to say, I'm around a firearm of some sort most of every waking day, and wear armor of some sort on the ones that don't start in "S".
I hunt from tree stand, tripods, tent blinds, big blinds with office chairs in them, on foot, from a four wheeler, I really want to do the helicopter thing.. Anyways, the point is I've been there done that, have the skins on the wall, and there's no way in hell I'm lugging my plate carrier out there with me.
Coming from a guy who wears armor enough the I have random callouses where the carriers rub... that should say something. I've seen a lot of innovation in the industry since I was issued my first PASGT many years ago, but I have yet to find anything that I would call comfortable. If it stops bullets, it sucks to wear. The trade off, not stopping bullets sucks worse.
If there is enough threat in your hunting environment to consider armor, find somewhere else to hunt.
Never felt the need to wear one instructing either. If I get to the range portion of a class and the students are still doing things that could get me shot, I screwed up pretty hard in the classroom portion of the class.