> It seems to me the increases of efficiency should allow all people a minimum quality life(...), no matter their contribution to society. I think this can turn people that are a strain on the system to contributors

How would they be contributors? I'm thinking maybe you mean that they will participate economically (buying stuff and making more babies). Is that really a good thing though, to have people who do nothing to contribute besides consume things--especially from a climate standpoint? It seems unnatural to me, because nature rewards competition, survival of the fittest, etc..