1)  Ranchers must pay the Gov't for each cattle unit (1 Cow and a calf.).  They must maintain fences.  All this costs us taxpayers less money.
2)  If you have ever been face to fave with a Wolf while hiking, camping, watching it attack your dog moments before you end the life of the viscous "Canadian Wolf" that was improperly introduced to the Northwest states.  Maybe you would have a different view on at least some of the natural predators.  Remember a wolf is an Apex predator, so are humans.  We simply cannot coexist.  
3)  Your right about USF&W, however most state fish and game do hire people who care very much, they typically need a degree in Biology and then take a rather low paying job as a F&G officer/warden.  If they didn't love the animals they would have opted for a higher paying job in the private sector.
I love Horses, I own Two of them, I like to see Mustangs adopted. There simply aren't enough people to adopt them all.