Isn't animal product a lot worse for the environment than plant-based food? Long term the world has to move towards consuming less animal product, not more.
Eating food that make you unhealthy is not a choice for me, and I am happy for those have better life with different diets. For those who have problems, I can recommend trying this out for some months and see if it helps you.
I wasn't suggesting eating food that's bad for you, but rather if there are plant-based protein sources (such as legumes) that can be used as (at least partially) a replacement for meat.