Perhaps you fall into these traps because you go in with a closed mind and only one open eye, not prepared to use the common sense you were blessed with at birth.
Just because a person does not have a tertiary education and a string of alphabet soup after his name, does not imply that he is incapable of logical and lucid thought.
I arrive at my conclusions in exactly the same manner that you do, and believe it or not, even though you may think I'm a worthless uneducated clod, I do have the wherewithall to winnow the wheat from the chaff and form my own conclusions, from BOTH sides of the debate, the majority of which, have served me very well over the course of my life.
"What can you say" you ask?
If I were you I would say "This is my opinion, but that does not necessarily mean that those who oppose my point of view are all necessarily idiots" It is far from an open and shut case.
Now,... just to ease your mind, I too have a sneaking suspicion that mans activities are probably affecting many of the natural phenomena on this planet, BUT, by how much, and as to whether we can we reverse it,... I have absolutely no idea (and I don't think anyone else does either for a number of reasons). Personally I think they are whistling in the dark.
Every now and then someone has to play the devil's advocate, and believe me it is very easy to do in a case such as this.