1. Energy - The renewable folks would have us believe this is incredibly cheap 2. Land - Most of this land is not usable for other purposes. At least in the U.S. I am not speaking about globally because the problems there are largely political 3. Labor - Creating jobs and opportunities is not a bad thing 4. Environmental - With the wars going on I think we have a lot more to worry about than the 3% of emissions coming from animal husbandry in the U.S. Other than climate change impacts (which could be minimized even further with feed supplements), animal husbandry is actually beneficial to the environment.