I can't stress this enough, but there is simply no goal for evolution. Up until relatively recently, it just so happened that larger brains and other features we consider 'human' have been beneficial. Even if it may not be a big factor now, don't decry it as evolution being 'dead', or even worse, that people are devolving.
If certain genetic traits allow certain people to pass their genes down to more offspring then you have all you need. It's a very simple concept with major consequences.