Has civilization and technology eliminated survival of the fittest and stunted the process of human evolution?

Technology seems to have significantly minimized many of the primal struggles for humans (i.e. food, security, sex, etc.) In theory, those who are more successful at these basic needs will have a greater chance to pass those beneficial genes to the next generation, strenghtening the occurance of those genes in the population and moving the species to an ever more adapted group. In humans, however, because civilization and technology has enabled almost anyone who desires sex to reproduce regardless of their level of “fitness”, what then drives natural selection and to a greater extent human evolution? Have humans derailed our own evolution?

First, natural selection enables, but is not in itself, evolution.

We might argue that selective pressures from nature has diminished in importance as selective factors for human reproduction, particularly for those who live in the developed parts of the world. But that doesn’t mean that there is no selective pressures – they are now imposed by other human beings, including those who determine whether one might mate and beget offsprings.

Selection has not been eliminated, but the traits that define fitness certainly have changed.

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