ends of MAN (unfinished)

Why believe in MAN's evolution toward a work-free ratiocratic warless civilization? Because you bought groceries and put gas in your car today? Because that is your hope for the future? If things really are progressing, getting better, why not believe that evolution would continue along the line that MAN has already followed to the "top" of the food chain, a movement wherein all of life is evolving out of entropy, conquering it by co-opting those same forces toward maximum organization, utilization of resources to the utmost, painlessly unto the maintenance of the metabolocratic form of life theoretically at the maximum of the universes' carrying capacity... and might not include "MAN" at all?