Actually, if you take us back to the levels of pollution in the air we had sixty years ago and kept everything else the same, you'd see a radical temp spike. This was documented quite clearly on 9-11 when all air traffic was grounded. The effect of nearly eliminating the aircraft exhaust literally brightened the sky and increased the amount of sunlight striking the earths surface. There was a clear and alarming spike in temperatures. In other words, the affects of warming are being masked to a certain degree by a dimming of the atmosphere by pollutants other than co2.
This is a complex issue, and it seems that the trend is to try to distill it down to sound-bytes that support political positions, not scientific ones. There are no definitive answers, yet there are very strong trends and indicators from many branches of science pertaining to present and past climate.
But, I don't need science to know when I'm on the wrong side of history (eg: lessons learned) I wear my seatbelt and insure my car even though the chances of having a serious accident on any given trip is very low. I keep a gun even though I've never been the victim of home invasion, have little fear of foreign invasion and don't expect my gov't to deny me due process. I support conservation groups (which are often conservative groups), because I believe in leaving my family the same earth my grandparents left me, or better...
I also believe that we humans can accomplish damn near anything, though still waiting on fusion... If an asteroid were discovered on a path to earth, I don't expect we'd throw up our hands and get a keg for the end of the world orgy... we'd do something about it. This is a challenge. Humanity is at it's best when overcoming challenges. The tipping point of climate change is that asteroid. Natural or otherwise, we have a vested interest in a stable climate.