My brother refuses to kill does because he thinks as long as he has them, bucks will flock in from surrounding areas during the rut. Problem is he's been thinking the same thing for many years straight now and each year there are more does & less bucks. They're getting bred alright .... just not on his place. They leave to get bred then come back to raise fawns on his ground. Now he's got a downward spiraling situation that's ruining his hunting.
My property is complete opposite. Any given year I have 2 or 3 mature does on 100 acres, and each one has a yearling or two and fawns. I have the same number and age structure of bucks any given year, and often more bucks than does. I've got legit chance of killing a mature trophy buck any time of season, not just the rut. My brother catches one or two mature bucks cruising his place per season, and it's usually at night. Before he began the habitat work to create what I call his "women & children shelter", he'd regularly kill a good buck. On paper the only difference between his place and mine is that he doesn't keep his does under control and I do.
It's been my experience that the years when I have the fewest does, I have the most bucks. And it makes complete sense. The land only has so many resources and those said resources are depleted by hungry mouths and bodies looking for cover. Doesn't matter what sex or age the deer is. It's consuming resources. If I didn't have does & fawns then those resources would be not only available to bucks, but inviting to bucks. My neighbors will still have plenty does.
I know that's not the popular "QDM" approach, and maybe even borders radical. Most folks want balanced sex and age ratios. I want a bachelor pad. That's just my experience and how I made sense of what I've personally experienced. I'm not trying to persuade you into killing off all your girls. All I'm doing is offering an example of a different perspective for conversation sake.