I cant answer for why anyone else chooses to do it.I personally trained with my old bandog bitch because I wanted to compete with her and see if she had the ability to do what the breed was originally meant for.Saying that protection training was only a tiny part of what I did with her.She is obedience trained to a standard to which I can drop her on a whistle at 100yds and leave her in a stay for as long as I want with distractions.She is 100% stockbroken woth all livestock cattle,sheep,chickens,cats and is often out hackingwith my daughter,goddaughter and friends and can spend all day wander