system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why did humans, and other species, evolve to have both male and female species? Wouldn't it be more efficient if everything could reproduce asexually?

There's probably a simple answer to this, but in reality it would be more efficient for every species to just reproduce asexually.
gpt
Sexual reproduction allows for more genetic diversity by requiring two very different organisms to combine unique sets of genes, some of which are sex-specific, to create an organism that is genetically half of each parent.