While it's true that there are probably many hoity-toity vegans etc, something has to be said for their sheer will. I for one have been trying to find a balance in my diet for years. I want to try and make as little negative impact as possible, but it really is hard. Vegans have provided evidence that meat is non-essential. I would rather animals don't die for the sake of our stomachs. Wouldn't you?
All that being said humans are imperfect, and of course finding a way to accommodate and feed a carnivorous, omnivorous, or even a herbivorous population whilst doing little harm to our planet is tough.