I liked the idea of the Star Trek Universe alot: Since they were able to produce any food and had enough of energy there was no need for money anymore.
Maybe in the future we will also be able to archive that. The only thing that will let people move forward is the wish to actually help the human race to reach further goals.
But until then i guess money will never be fully secure. You just have to look at the financial markets and the highly depted governments of alot of countries these days.