Evolution can go quickly if the selection pressure is high. (example: done in under 24 hours if we shot everybody without blue eyes) Our environment has been d

Evolution can go quickly if the selection pressure is high. (example: done in under 24 hours if we shot everybody without blue eyes) Our environment has been drastically changed by birth control. Previously, a desire for sex was essentially equal to a desire for reproduction. Selection for one would select for the other, so they didn't need to be distinguished. So essentially we are now unfit for our environment. We will rapidly evolve to fit this new environment. People of the future will desire actual reproduction, not just sex.