The problems we are facing are a magnitude larger than the issues any of those people faced. And I say that not to diminish what they have accomplished but to emphasize how big of an issue climate change is going to be. In the next 50 years we are going to see an unprecedented amount of suffering, as large populated areas start becoming unliveable. And this is already in motion. Even if we found a solution to these issues today the momentum of climate change means it is already too late to mitigate the disaster we are facing. I'm sure we will solve many issues to help us diminish the damage, but I still fully expect billions of people will be suffering from famine and climate related expulsion.
People like you who blindly say "oh we'll get through this we can solve any problem!" ignore how big of a mess the prior generations have caused for our children. If I was becoming aware of the world I was born into in 10 years, I sure as hell would be really pissed that my parents are handing me an unsolvable crisis that their parents and then they ignored.
This makes me sad because it's unequivocally false but for someone to believe this in their core is such a societal failure.
You're right, our society DID FAIL US! And that is the core of the issue. If our society had actually given a damn about future generations 40 years ago we wouldn't be in this mess.