People who depend on livestock for their livelihoods don't like large predators poaching them. We all tend to prioritize the things that affect us directly and ignore those things which fail to do so. You don't have to worry about livestock depredation, so you get to prioritize abstract environmental sentiment. You do have to deal with the weather and get to work, though, and so you burn fossil fuels for your commute and to cool your home. You could conceivably just sweat all day like your forebears did for millennia, but that would actually make your life harder... and so you don't. Just so for ranchers and mountain lions.