I have my own misgivings about the accord and there are multiple ways of implementing change which I would feel better about.
That said, denial of climate change is lunacy. I would rather do what we believe is justified than to do nothing until it is too late.
"A pessimist sees the difficulty in every opportunity, an optimist sees the opportunity in every difficulty” ---Sir Winston Churchill
"Political extremism involves two prime ingredients: an excessively simple diagnosis of the world's ills, and a conviction that there are identifiable villains back of it all." ---John W. Gardner
“You can’t go back and change the beginning, but you can start where you are and change the ending.” ---C. S. Lewis