How to explain?

There are times when euthanizing can be more humane than rehoming. If I sell or give away a substandard dog, then that dog could very well spend it's life being handed off from owner to owner and never really finding a "home". Also many hunting bred dogs are just not suitable to be a pet. They may have a ton of energy but no drive to hunt, making them useless to a hunter and a liability to a pet owner. I also feel responsible for a dog that I give away. For example if I had a dog that I was not comfortable to have around kids, and I gave it away and it bit somebody I would feel terrible. And responsible. I would rather see the dog put down.

Before I deployed I had two dogs that I liked, but really didn't fit what I wanted in a hog dog. Decent dogs at what they did, just not "wired" right for my tastes. I could have just put them down, but gave them away instead and last I heard they were doing fine for the new owner. I think a lot of hunters will try to find a place that is a better "fit" if they think a dog is worth keeping.

How many would consider rehoming to be culling?