Post Scarcity Economy

The post scarcity economy is the idea that we have found a way to make our resources last much longer and for a lot cheaper. The issue with this is that with materials being cheap the need for manpower will no longer be necessary and this will leave everyone in a place where they no longer need to work which leaves the question what exactly are we supposed to do as a species. We have gotten by all these years by allowing everyone the opportunity to work in one aspect or another but in a world where there is no need what will we turn to? Possibly we will become a solely creative species that spends all our time finding new ways to entertain ourselves until our demise. I don't think  the 3D printer will change to much in our life time but it may be able to print at faster speeds as technology continues to advance into the future. In actuality a post scarcity would never actually occur as all materials are scarce and we will eventually run out but the idea itself is fun to play around with.