If you believe in PAST evolution, then what do you believe for future evolution? Do you believe that man will "evolve" into a passive peacelover? This doesn't seem to be the case. As our new technology gets more and more complex we may brag that we are "more evolved" now , but killers and madmen will make use of the new technology for "mass destruction". Then what will your "survival of the fittest" do? The "fittest" will be the one with the most powerful weapon and the "fittest" may exterminate the entire species!
The point that I was trying to make at the top of this thread was this. The very thing (our intelligence) that has "evolved" us to this point and helped mankind to survive , up to this point, could ultimately be the thing that causes our extinction.