The U.S. should stay in the Paris accord, but I'm not upset that Trump pulled out. The overall direction of the world isn't going to change. If the US abdicates its leadership position, others will step in to fill the void. Trump wants to gut all US science funding, not just climate science. Over time, the U.S. will no longer be # 1 in innovation, and the benefits will accrue to the EU, China, Canada, Korea, etc.
:shrug