Personally, I think the biggest problem is lack of trigger control and the I've got to get my money's worth attitude. I'm fortunate to live and hunt in black belt territory. If you give them time to get to 4 or 5 there's a good chance a buck will grow 120-140"+ and 150-160 are possible but those bucks don't max out until 6 or 7 yrs old. Regardless of genetics a 2 yr old buck will rarely get to 120. Most land around here is leased or privately hunted and leases go for $10-15/acre. Fortunately most folks around here are going for quality and not hunting for meat. Let em go, let em grow.
We probably don't kill as many does as we should but the coyotes do work on the fawns