my feeling is that we could support more people at a much higher level of comfort and wellbieng with a small fraction of the resourses used today

that is not implimentable, one because there is no clearplace to start , and that most people are bastards in one way or another, you, me, the other bastard, just that little bit untrusting, looking for advantage, dreaming of our indivual ambitions, and by times hungry, bored, mean, bastards, who only get worse if there is pressure to be all saintly and save the world, cause you know, it would be fine to go ahead and save the world and shit, but they want you to be all fucking polite about it, WHILE ,you do it