So instead you'd prefer entire species to lose their natural habitats due to agrarian, "healthy", developments in the forests? You'd prefer the humanity to die out from a heat crisis?
I don't know what you're referring to with that first part.
But first of all the climate change is our own fault and very heavily connected to industrialized farming or whatever it's called. Where tons of animals are kept together on way too small space. The animals need tons of food and water to grow to a point where they are killed. If we just ate their food and water directly and skipped the middle man, instead of feeding it to them first, it would be much more effective.
And actually unlike some people I'm not obsessed with the idea of humanity being incredibly worthy of survival or whatever. We actively make our planet into a place where we can't survive, and we also kill each other and tons of other creatures while we're at it. I don't see what good we bring to this world.
I like my own life and I'd like to enjoy my life until it's over, but I could not care less about whether humans die out in 100 or in 5000 years.
Well... So you can't survive on a deserted island...
I hope you realise how ridiculous this comment is. I don't know if you're trying to prove something with it, but you're not.
1. I don't live on a deserted island, I live in a developed country and don't need to hunt animals or collect berries to survive. I simply go to a supermarket.
2. Even if I were on a deserted island, it would make a moral difference for me to kill animals then. Because in that case I'd need them to survive, while right now I don't. It wouldn't be unreasonable even for vegans to kill animals to survive on an island, because it's usually not unreasonable to want to stay alive and to prioritize your own survival over the life of other creatures.
Just because you decide to do or not do something in day-to-day life, doesn't mean you have to make the same decision in a life-or-death situation.
Also, I wouldn't survive on a deserted island either way, whether I was vegetarian or not, for reasons entirely unrelated to my food.