To be or not to be with climate change isn't the right question imo.
How can we lose is more on the money.
For me climate change debate is win win.
If climate change comes to be and we are adopting mitigation measures now then it is a +ve.
If climate change was a long garden path but ultimately the wrong one and the mitigation measures we are adopting now lead to reduced resource consumption, cleaner air and water then it is a +ve.