We don't know what is to come, I think it is reasonable to assume that all our lives will get much worse in the coming decades because most evidence points towards that. However, who knows what AI will lead to exactly, same with climate change, same with the rise of this new MAGA fascism. Rather than being stuck in our own heads thinking and dwelling about what is to come, we should work on what we can do, stick to what we are in control of, be in the present moment.
We're all gonna die one day anyway, if our fate is nuclear apocalypse in 2040 and none of us have any chance of stopping that then fuck it we enjoy life until then. We can still help our communities, create something beautiful, spread joy and kindness. We can still leave a legacy for a post-nuclear world, or post-AI matrix-esque dystopia, or post-climate apocalypse hell or whatever you know.
Basically what I am getting at is that this worrying about and specific predicting of our long-term future is not worth it, comrade. But still I understand your worries and I think people should understand how serious it is that we get this movement moving, and to be fair if a post like this does inspire someone to act due to fear of what may come then it has served a useful purpose.