Remember, we are creators. Catastrophic endings are not realistic. We have only had a temperature rise of less than one degree F since 1900, with massive industrial growth during that time. And now we are in a cooling trend (or so says the majority of climatologists) and we will be wishing for warming as we notice the shortages of food worldwide (not to mention the rapid rise in inflation about to occur).
I can't deal with the negativity that warming brings. But now that the government has decided to move forward using junk science, we have a lot to be concerned about.