Also, I do think it’s realistic to get people to eat less meat. Going one or two days without meat, or on days you do have meat just having less, would make a substantial impact. A lot of cultures eat a lot less meat than north american where people seem to expect a whole steak for each meal. Both Asian and Indian food has a lot less meat in each dish, for example.
The mostly meat and potatoes diet is something we can change realistically, I think.