New player jumping in.
Yes, I think climate change is real, and apocalyptic, in the full sense of that word. Don't worry - no quotes from Revelation below.
I'm sure scientists aren't 100% accurate but I think they're 95% accurate and that's more than enough. Is it caused by man? Yes, though I'd allow for other environmental causes beyond our control to also play a contributory role.
Here are some unfortunate realities, as I see them:
1. We are a violent, warlike, selfish, tribalist species. On Star Trek, we are not the humans - we're the Klingons or Cardassians if we're being honest. We are not going to come together as a planet to solve this problem. I don't know how you can read the Old Testament or read history since as far back as it's been written and conclude that our species has that capability. We will go out in a blaze of war and violence.
2. I think we are already past the point of no return, as in "sixth extinction" no return. Even the best-case, probably already outdated IPCC predictions include unjustifiable assumptions of magic, such as planetary-scale atmospheric carbon scrubbers and other new technologies, which do not exist. Their non-apocalyptic models assume concerted, cooperative interplanetary action, as if every nation will make this is a priority and every citizen becomes an angel. Give me a break. We can't even get tiny local wars stopped. We can't stop extinction of animals, much less of man.
3. Every year, the measurements are waaay worse than +2C, and there is very little political momentum towards change. Keep in mind, +2C is already submerged cities and hellish weather, and that's assuming all feedbacks are understood, which they probably are not. We are tracking to more like +4 or +5C, and according to some, by the time you get to +6C
only fungi can survive. If you look at 2018's news, there really has been no progress towards getting us down even in the neighborhood of +2C. I don't think people appreciate this isn't about "more hurricanes" it's about the end of humanity.
4. I do agree with the earlier point that God is in charge. He's always in charge! But...so what? It's only relevant from a late-night comfort point of view, and yes, I do think we can take comfort in the fact that whatever is going to happen is going to happen because that's God's plan. However, that doesn't change our own actions.
5. I definitely don't think we can just sit back and put our feet up and say "oh well". However, my reasoning is perhaps stranger than some's. From a Christian world view, once we start talking about apocalypse, I think certain rules come into play. And the #1 rule is that it's folly to set a date. Jesus says we will not know, and I don't care if calculate your date by analyzing Biblical prophecy or running models in supercomputers. What makes you think this prediction is any more accurate than the last 10,000 times? Just because it's science? It's still the product of humans. The model may show it's the end of humanity, but from a theological point of view, truly trusting that it's the end of mankind is unbiblical.
6. Because we all have children and grandchildren, let us take appropriate measures to fight against this threat. Immediately that turns into which actions, which policies, etc. and that's a brutal mix of science and politics I won't go into. I truly believe it will not matter, but I also truly do not believe that my passing out tracts outside an abortion clinic is going to matter either.
BTW I'm a Bible-believing gun-owning modernity-condemning fundamentalist paleoconservative.