What would be the advantage in your eyes to scope the rifle?

I belive that iron sites are far superior in short range situations that is a given, faster site picture and a full field of view (I shoot both eyes open so scopes are not as bad for me as some others who do not) I would want nothing but iron sites at or under 50 yards so QD mounts if I decided to scope would be a must.

My reason for asking the question in the first place was to seek out the advantage a scope might give me for DG. I admit to not knowing much about DG hunting but I could find no advantage in my mind due to my range expectations on a hunt except as stated the trophy at long range that may temp me to take a shot outside my window of wants or the outside possibility of a wounded animal that I lost site of and reappears at distance going away a scope might give me a final chance at a spine shot from a distance I would not normally suspect.

I would very much like any reasons you may have I might have not be thinking of though.

James F. Nixon III