A lot of the rain forest chopping to grow food to feed animals for starters plus obviously house the animals too.
I try to buy local veg, stopped used supermarket for it, plus I try growing the odd thing and my parents have an allotment which helps.
End of the day I’ll not dictate to anyone what they should eat but I found myself being hypocritical about the treatment of animals and the environment and that’s why I decided to change to plant based, plus after watching game changers that it’d help fitness wise which I feel it has.