Many things bother me about evolution, but mainly its if its survival of the fittest, then why are there female species? If natural selection makes a species evolve into something better, how come we are not just one sex and can reproduce on our own? How would an intransient being know to somehow "evolve" into another sex? Do evos believe that "two" separate entities (male and female) "evolved" on their own, and at what point?
See bacterial conjugation. Bacteria carry the world's first primative noodly apendage and bearded clam.