Societal pressures are real, though. It doesn't matter that there's not a physical force making you do a certain thing. Humans are social animals. We're, from day 1, molded by the world we were born into. To claim that you can just deny all of those drives is, quite simply, arrogant.
Again, I want change. I want to make it as easy as possible for the individual to do the best they can. Beating them about the head, saying "well you can just choose not to eat meat!" Doesn't help that cause.