^^^ just for the record, I don't disagree with that sentiment. I don't even hunt at those ranges because I am not in that environment/terrain. I doubt I would ever attempt to range a deer with a reticle based on an assumption that a deer is a particular "known" size if I did hunt at those ranges, though.

However, that does not mean that a reticle cannot be used for estimating range, particularly when dealing with targets of known size such as a doorway of an office building... In my mind it is more of a "tactical" tool and not the best tool for determining range to a target of any type. That doesn't mean the entire exercise is worthless. Lots of tools, lots of applications, lots of skills are available to the shooter. Some are better than others depending upon the situation and circumstances, just like every other discipline.