Oh, there is no cost to it?

The FAO report found that current production levels of meat contribute between 14 and 22 percent of the 36 billion tons of "CO2-equivalent" greenhouse gases the world produces every year. It turns out that producing half a pound of hamburger for someone's lunch a patty of meat the size of two decks of cards releases as much greenhouse gas into the atmosphere as driving a 3,000-pound car nearly 10 miles.

We should at least start passing on the true cost of harmful things like meat onto the consumer and putting subsidies behind better alternatives. That will start to shift things. Trying to tell people they are doing the wrong thing won't matter to a lot of people who have no to little morals. But start to encourage them economically and it will have better outcomes.