I don't think of efforts to ameliorate the effects of global warning as a way to save the planet. Earth will do just fine. The threat is to the habitat of my species and other species I rely on or just like. (Penguins come to mind.)
I do want to mark this date, when 195 nations committed to reducing greenhouse gas emissions. I will not be alive when the success or failure of the accord is measured. For the sake of younger and future generations, I do hope it works.