As I struggle with my specific spiritual beliefs, I don't know if I believe that this utopia is something that we (who vanish, so to speak, upon death) are trying to build for future generations or if this utopia is something that we (who live beyond the grave) will partake of for eternity.
I cannot see, however, how the self-governance of one's life should differ whether we are building for a future generation, perhaps never to experience the ideal world ourselves, or if we will find ourselves in state of joy and prosperity forever.