My dad had his own set of rules, and he drove them into me and my brother for the 30 years we all hunted together. One of the rules was we never shot anything but a bull, buck, or boar.
Even though i've hunted solo for the last 30 years after my dad and brother passed away. I still live by his rules. I did shoot a cow once, but probably won't do it again.
Another of dad's rules was if the hunt is too easy, it doesn't deserve a kill. A doe seems way to easy to kill around here.
I won't get into the other rules. They're pretty strict. I will say some involve still hunting with open sights.
All my hunts are in honor of my dad. I couldn't do that if I broke the rules.