Well, possibly, but only if we are constantly re-defining what is “best.”  It was best that the old man finally died, given that his life had become a living hell of pain.  It was best that he grew old, given that nobody wants to die young.  It was best his young wife left him and took all his money, what little he had, given all the friends he found while living under the bridge.  It was best that he never finished school, never had a steady job, never had a meaningful relationship, never had jack squat, was addicted to heroin, and had every STD known to science, because he was such an inspiration to all the others who never wanted to end up as pathetic as he was when he died.  So, yeah, things do always turn out for the best.