Here’s the thing - I think you believe in a weird fantasy future that you’ve been fed lie after lie about. And it has made you depressed and sad which has made you angry. You have no ability to critically examine these ideas and just accept them as fatalistic, completely ignoring the ability of humans to shape it. You sound neurotic and paranoid. Grill a steak.
We’ll be ok. We can change things as needed. Enjoy life - it’s really nice! =)
And meat eating has an enormous effect on climate change: https://www.bbc.com/news/explainers-59232599
But sure, I'm the one with the fantasy future here. I wouldn't care except YOUR consumption is directly ruining the world for everyone else.
And I notice you didn't address your own comment asking why we should bother caring about future generations. How heartless are you?
Have you considered asking those "future generations", i.e. YOUR KIDS, whether they'd like to live on a planet with a self-sustaining ecosystem or suffer through a climate catastrophe?
You can't possibly think that we don't owe it to future generations to try to leave them a better planet. Would you support setting off a nuclear war now too, because the fallout will be a future someone else's problem?