fulltimestudent:
"Which leads us to ask why is it that these fanatical christians think this way?"
Fundamentalist Christians tend to be politically conservatives. Conservatives, as part of their inborn temperament, do not care about people outside of their circle of family and friends nor do they care about the environment in general outside of their own backyards. They have neither a social conscience nor a sense of general responsibility for their actions and thus resent anyone telling them that something must be done on this or that problem.
Once the irritating "We must do something about this" is communicated to them they spin forth a thousand and one excuses and falsehoods to justify themselves.