Evolution has no purpose. It's driven by natural selection - survival of the fittest in the new environment. We lost our sharp teeth and tails and claws but grew a prefrontal cortex instead, which brought a new more fully developed type of conscious awareness into the world. We survived because we were good generalists, rather than specialists, and because our higher intelligence allowed us to out-hunt, out-gather and generally outsmart everything else. But we're still tipping the scales and now we're able to do amazing things at a massive scale, and who can say if we'll end up destroying most of the life on the planet at some point? Or at least devastate our own civilization. So it's not like a linear climb toward ever better things - it never is. What serves a species well at one point evolutionarily might be what destroys them later.

But that said, I do agree that we still have to learn how to use all this shiny new conscious apparatus we grew - and mainly we need to learn how to integrate it with unconscious intuitive wisdom, which is something left-brain conscious intelligence arrogantly forgets about.