My point is that we don’t know. It doesn’t matter if something’s hard to imagine - we don’t even understand the bits of climate change that we’ve actively measured.
It actually feels kind of conceited to me to think that we’re even capable of wiping out all life on the planet. Even if full on, worldwide nuclear war l with our entire arsenal broke out, I wouldn’t expect it.
All we did was get the ball rolling. Our destructive capability at this point is moot compared to the natural forces we’ve unleashed.
Saying life will persist is a point of faith or wishful thinking. It’s not a given. I wish it was. But of the two trillion or so galaxies in our observable universe, so far life has only ‘found a way’ on ONE rock that we’re aware of. Why would it seem conceited to express the possibility of failure for something with a success rate amounting to an anomalous blip in an otherwise 100% life-free void?
Life is fragile as fuck. Even extremophiles are fragile as fuck when we’re talking about logarithmic temperature increases fueled by a literal star and a planet with an atmosphere acting as a giant magnifying glass.
By all accounts life on this planet isn’t special.
It’ll be fine. We won’t.
This planet is the one and ONLY account of life. That makes it pretty special imo.
And also makes it apparent how ridiculously the odds are stacked against life.
The scale of your perspective is of little importance.
There exists objective, observable evidence of the fact that life has cycled continuously throughout the existence of this planet and there is none to suggest that this will change at any significant point in the future.