First, they're not farmers. They're ranchers. Second, it hardly "destroys the environment for their convenience". Where I live the cattle graze down the grasse

First, they're not farmers. They're ranchers. Second, it hardly "destroys the environment for their convenience". Where I live the cattle graze down the grasses and prevent fires from spreading. In return, they leave manure which is super useful as a natural fertilizer for gardens and such. Third, ranching is about food security. The areas where cattle are grazed are typically not much good for food crops, and it's a far more humane way to keep cattle. They got to roam around some pretty vast tracts of land, and you have a really healthy source of locally-sourced protein. Finally, cattle are property. The idea that you shouldn't be allowed to protect your property is nutty. There are plenty of other wild animals for wolves to prey on, and there's no good ecosystem argument for why they should be permitted to slaughter cattle willy-nilly. Allowing ranchers to shoot wolves threatening their cattle would result in surviving wolves being much more reticent about going after cattle in the first place. See: why bears and cougars rarely attack humans, even though their populations are healthy enough to be on the "hunt all year round" list for property owners in many areas.