I can't think of any down sides to owning land and managing it as you see fit. Of course thats just me.
I guess if I viewed the world as a barren, deer free wasteland like you do I would understand why you found it so despicable that I took that fine young boy deer hunting, now his life will be ruined as the years pass, and he walks aimlessly in search of anther deer on state lands that we all know have been rid of those tree eating, car wrecking, tick spreading vermin A.K.A. the white tailed deer.
What have I done?