Why is Climate Skeptic An Insult?

I'm writing about the usage of the term "Climate Skeptic". In my experience it is usually used in a disparaging way to describe people who disagree with majority of climatologists about significant parts of the Anthropogenic Global Warming hypothesis.

In this case I'm not interested in the people who are called climate skeptics, but the people who used the term as an insult. Below is from Wikipedia about Scientific Skepticism:

A scientific (or empirical) skeptic is one who questions the reliability of certain kinds of claims by subjecting them to a systematic investigation. The scientific method details the specific process by which this investigation of reality is conducted. Considering the rigor of the scientific method, science itself may simply be thought of as an organized form of skepticism. This does not mean that the scientific skeptic is necessarily a scientist who conducts live experiments (though this may be the case), but that the skeptic generally accepts claims that are in his/her view likely to be true based on testable hypotheses and critical thinking.

To my way of thinking, this is a pretty good working definition of a scientist. Not all skeptics are scientists, but all scientists should be skeptics. Obviously no one can be a perfect skeptic, there is not sufficient time to test every hypotheses. At some point, you have to assume the published numbers in the handbook are correct and concentrate your skepticism on the object of your research.

If all scientists are skeptics, then why would skeptic be an insult? The obvious reason is that the people who use the term are not skeptics, but "climate believers". These are people who have accepted the meme of AGW without the skeptical science that created the hypothesis. For the believing mind, skepticism is not part of their mental outlook. Once something is incorporated in their belief system, questioning it, testing it, trying alternative explanations are not normal scientific inquiry, but heresy to be punished. Scientists are reduced to button counting and butterfly collecting, since real research is dangerous to the believers. If the scientists find results that challenge the AGW hypothesis, then the results must be reinterpreted to fit the consensus or buried.

References:

http://en.wikipedia.org/wiki/Skepticism#Scientific_skepticism