[Excessum]

Hold 'em horses... someone has got the wrong idea here. Adendum was not bashing the nature/purpose of money itself, instead it was criticizing the whole social and economical model of our civilization and promoting an alternative for it, where there is no money as there would be no need for it, since people would have everything they need for their lives available for free and in sufficient quantities, which would be provided by technological and cultural progress... which currently is limited by the monetary system.
Yes, it does resemble the ideas of communism/marxism, but only partly and in my opinion is a valid model of social structure... at least to some extent.
Just imagine a world where you have everything you need for your life and don't need to move muscule to obtain it. You have free energy, provided by renewable/infinite resources (geothermal, wind, Sun... whatever), you don't have to worry about where to live since there are apartaments available in cities, which can be expanded whenever such need arises, or move to move to suburbs where you can have a house built by your own design... just the way you like it. Heck, you would not even have to call for a plumber, if your sewer system got blocked... due to nanobots/robotic cleaning mechanisms/shit recycling bacteria/whatever they come up with in the future. Streets are cleaned by robots, garbage is automatically recycled... and so on - al lthe dirty jobs are done by technology. You would only need to wipe your ass after releaving yourself.. although even that is questionable X)
The production is fully demand-controlled, since i doubt people would choose low-quality products over the ones that are better, you could choose the car that suits your needs the best, be it a sports car, family minivan, or a SUV and you would not need to go for several cars for going to the city/outside the city due to difference in fuel consumption, since hey... fuel is free just like everything else...
Now, of course the most unpredictable factor here is the human behavior in such an environment, since with everything attainable without any effort, the only thing man would fight for would be women... (haha).
Yeah, if we put a 'modern' man in such utopical world, i do not think he would be motivated to do much, now would he... he would just enjoy himself, eat all the free food, see the world with the help of free transportation, listen to all of the free music and do nothing else... but hey, with the enviroment the people change too, right?
*i cut a big part out here, since i am really tired/sleepy now and got straight to the point*
In the end, people mainly choose their professions for a reason which in most of the cases is beyond mere economical interest... because they like teaching, they become teachers; because they like science, they become scientists... and so on. Why couldn't this work? The spirit of competition, ones own desire for achievement and renown and social pressure (doubt that people would like slackers more than they like them now) would do a great job of providing a good motivation for people do something. And due to the technological advancement, as i hypothesized before, there would be no need for 'unwanted', unpopular professions such as janitors, plumbers and whatnot... leaving place for human creativity, spirit of competition and will to help others.

But then again, it might all be just a rambling of a man who is barely able to keep his eyes open to see the keys he is hitting on the keyboard... or maybe not?