Darwin?

Evolution by natural selection, as an extraordinary reality of our world?

I thought Evolution was still a theory? How can it now be our reality, doesn’t it have to be proven first? Evolution, if it happened took millions of years to happen. I thought evolution is for improvement and to form a better being. Extraordinary, have we become extraordinary in the past million years? How can an extraordinary developed being do so many horrific things, like killing its offspring, altering their consciousness with substances and purposely injuring themselves as a control mechanism? I just don’t understand, if we have mutated by natural selection into a better society that would function at a better capacity then our ancestors.  

I know this is completely off subject, but it also brings to mind Hitler, how he was attempting to be the bigger force in selecting the best of the race (according to his standards) to rule and dominate the world.

http://www.youtube.com/watch?feature=endscreen&v=XV7Z3Qo6wjU&NR=1