You basically do have unlimited doe days. You are allowed to kill 12 deer total and only two of them can have horns. In many counties those two with horns have restrictions as to minimum inside spread or number of points. This is for no other reason than herd control. DNR would prefer you to kill more does. If you were to kill two thirds of all bucks, every doe would still get bread. Killing bucks does very little to control the deer population. That is why there are more restrictions on killing bucks than there are on killing does.I only shoot does. Bro's before does. I just think they taste better imo. You can argue herd control but you'd have dnr have unlimited doe days if that were true. Everything is a balance. While I tend to let smaller deer walk it is my choice. For every hunter like myself who lets them walk I'm sure there is an equal amount or less that do not. I will say there have been seasons where I let younger ones walk early in the season and for what ever reason didn't get to hunt much more that season and regretted it. I wouldn't judge someone for shooting a small deer but would if they took pride in it.