I have no doubt that in the next 100 years (barring nuclear annihilation) everything in human lives will be vastly different. If we go back 100 years, cars were just emerging as were airplanes. I see no reason that technological progression will slow, the energy problems will be solved somehow, manufacturing will be unrecognizable compared with today.
Not sure if goods will be produced on such an efficient scale as to be nearly free. This would require a move from profit and desire for more, to a whole different societal way of thinking. Such human thought, greed, ambition, etc, have not changed as rapidly as our technology has advanced. We are still subject to the seven deadly sins, so to speak. I think to obtain a utopian society would take a major shift in people's basic instincts. Not sure what type of event would precipitate that kind of change.