Evolution: Not a Philosophy

The theory of evolution doesn't imply eugenics any more than the theory of gravity implies trickle down economics. let's be clear: evolution is a fact, a theory, and an observation of reality, but not a philosophy. To derive a philosophy from it would be insane. Ironicaly, the same demographic (repubicans) who are against the teaching of evolution because it might lead to social darwinism, seem to hold a political ideology based on survival of the fittest. Don't have health insurance? Should've worked harder. Why is it that the only people who believe in darwinism are those who don't believe in evolution? Perhaps if they understood survival of the fittest they would recognise it in their own ideological rantings.