FTFY
"Everything is peachy" is just wishful thinking.
Everything IS peachy. Fixing problems is the opposite of what life is about. It's fine as a hobby, albeit a rather dull one (I can think of a thousand other things I'd rather be doing, but hey, whatever rings your bells).
In purely hypothetical terms imagine that within 30 years climate change becomes severe enough that it unavoidably affects my life. For example sake, let's assume that I live in Dubai and Dubai becomes uninhabitable[1]. This would limit me on a daily basis and I wouldn't be able to do the things that I want to do.
If that's not your concern, that's perfectly fine. It's also perfectly fine that I discuss these problems with other people who care about them. If you don't care about this discussion it's always trivial to ignore it.
[1]: https://www.theguardian.com/environment/2015/oct/26/extreme-...
Optimist: everything is peachy.
Pragmatist: let's fix these problems.
There's a big difference between solving problems (which means communicating about them) and getting upset with problems. Changing the world for the better is inspiring, not depressing. Whether you get upset with the message is a choice that you have made.