One thing that really disturbs me is how the issues surrounding the ethical treatment of animals, and the environmentally sound treatment of the environment including the land and the air get conflated with human health issues so that somehow people end up arguing that all our problems would be greatly lessened if not solved if we just all stopped eating meat, our health would improve, the lives of animals would improve, the environment would improve. I'm not buying it. These are all worthy goals, treat animals ethically, treat the environment soundly, treat the health of humans intelligently, but first truly study the issues and don't go for simplified answers with no scientific merit, just a lot of bias and holier than thou proselytizing.