I check and comment on the subreddit on an almost daily basis, and have for about a year now.
It takes a while to believe that it can happen, for sure. I didn't start seriously believing it for at least six months of checking the subreddit periodically.
But when you see how much damage we're doing to our oceans (National Geographic warns there might be no (human) seafood at all by 2048[1], ocean acidification, coral bleaching, etc), how more and more regions are getting into emergency situations with water (which will lead to people getting more and more desperate to get that water, and possibly wars being waged over it), positive feedback loops from global warming that can shoot us way past 1.5c if we get that far (I've seen speculation that it could get up to 12c, which would likely wipe out humanity), and know how terrible humans are at dealing with exponential and compounding escalating situations (as proven by our current pandemic), and yeah, I'm pretty sure it will happen. The only question is how soon.
It's also looking like even if we could do enough about it, we'd have to dedicate almost 100% of our efforts towards it, and basically everyone on the planet are being distracted by petty shit, or even other very important issues, just not as threatening to our existence and society like climate change is (including myself, it's hard to avoid the distractions with our monkey brains). So instead we're doing basically nothing but lip service towards these issues, still, after more than 50 years of warnings by scientists.
So yeah. I'd love to be wrong, but I suspect I won't be, and within the next 10-20 years some unprecedented terrible shit is going to to happen as a result of climate change. It's already happening right now and people are dying from it (wildfires, floods, droughts, heat domes, more intense storms), but I'm betting it's going to get a lot, lot worse.
But hey, in the meantime I'm still working on dumb stuff like designing board games in my free time and not really doing as much as I should be to prepare and/or try to prevent it (tried buying an electric car and there's basically none in the Midwest right now, I am still working from home so at least my emissions are way down, I did try finding a job in green tech and found very few jobs and those that did were terrible about getting back to me).... so yeah, not like it matters all that much that I am aware of the trajectory our planet and society seems to be going in.
Anyway, during the week (not on Fridays, fridays they let dumb shit get posted), it's generally just articles from legit news sources (along with some self posts). Try reading those articles for a while and see if you still think everything is going to be okay.
Also if you do nothing else, watch these videos in their sidebar. You'll get a lot of information from those:
Collapse: The Only Realistic Scenario
https://www.youtube.com/watch?v=qPb_0JZ6-Rc
How to Enjoy the End of the World
https://www.youtube.com/watch?v=5WPB2u8EzL8
[1]: https://www.nationalgeographic.com/animals/article/seafood-b...