To me, it has nothing to do with money, just science and facts. No spin at all. To me, I don't care what money, business, or special interest motivated someone to determine that the earth was round, and not flat. That person determined it scientifically, and it is now a fact (contrary to prior thought). I don't care what money, religion, business, or special interest motivated someone to determine that the earth revolved around the sun, and not vice versa. That person proved it scientifically, and it is now a fact.
The same goes with the greenhouse effect. It is a fact, based on scientific principles (until someone provides me evidence proving otherwise). I'm certainly open to evidence and science to the contrary.
There is a direct statistical correlation between the rate of increase of CO2 in our atmosphere and rising global temperatures. As was also pointed out, there is a point of no return, at which time the earth is completely overwhelmed, and can no longer absorb the excess CO2. The earth would then simply turn to a plant like Venus, where it is too hot to sustain life (as we know it). Frankly, I do not want to push us there faster, or be the cause of it. And CO2 and similar greenhouse gases do that.
As far as having data back only 30 years, the science for what I am talking about does not rely on a limited sampling of 30 year old satellite data. The CO2 ppm is measured historically, from air trapped in ice core samples from about 500,000 years ago. To me, that is a lot of data points. No 4.5 billions years, of course, but you can get a idea of recent cycles and trends. That data does suggest variations and cycles, consistent with what we would expect to see. That is, of course, until you get to today, when it goes outside anything we have ever discovered before.
http://climate.nasa.gov/climate_resources/24/Yes, CO2 is necessary. So is oxygen. But too much of either one can be bad. Don't stay in room made up only of CO2 for too long. Or one made up only of oxygen either, unless you like fire. In other words, both are good and completely necessary, but only in the right proportions.