George Monbiot wrote an article about food security in which he plainly stated that the best thing we could do to ensure that everyone has food to eat is all go vegan. He then promptly said it's impossible and that he won't do it, so we should just give up on that idea right now.
If only Martin Luther King had learned from the Monbiot school of activism: "I have a dream, but it's not really feasible. I guess racism isn't so bad, as long as you cut it out with the lynching."
Or Abraham Lincoln: "Fourscore and seven years ago our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal. But we can't realistically expect anyone to give up their slaves, so let's just keep fewer of them around and call it even."
Or John F. Kennedy: "We choose to go to the moon. But we may as well give up now, because getting to the moon is really hard."
Give me a fucking break. Not only is being vegan morally right for the animals, not only does it dramatically improve our ability to feed humans, not only does it help the environment, but it isn't actually hard at all. It's trivially easy, especially for anyone in a modern society, to eat an abundance of healthy and delicious vegan food without any more or less effort than it takes to eat an abundance of healthy and delicious non-vegan food.
Stop making excuses.