RE: question about ethics, not sure if its a good ? or not...
I shoot coyotes whenever I get the chance. I don't have many problems with coyotes taking livestock, but then again, most coyotes in my area are "new" to the territory.
For other varmints, I also shoot whenever and wherever. People call them varmints because they don't want them. They dig holes and consume resources that livestock or more desirable game animals coulde be utilizing.
One thing to remember about varmints, they are not designed to have much in way of life expectancy. So they also have the ability to populate rapidly.So shooting them doesn't do much in the way of harm tothe population. So if you derive enjoyment out of shooting them, why not? We put all other resources to use for our benefit, so why not varmints?