It's never easy for anyone who gives up being a vegetarian or a vegan. It's a very hard day when that universe collapses around you, but you have to go on... no matter how right you think something is, it might not be, and so you have to stay engaged... if you stop engaging with what you think is the truth, and you think you've got all the answers, in ten years you're going to look back and realize you were maybe not so right...
With the right animals, that are raised appropriately, that have access to the correct habitat, and the correct nutrition for themselves, this tends to line up with what we evolved eating. So, as long as the animals are being treated respectfully, and the planet is being treated respectfully, there will be food that is perfect for human beings.