either case its far, far away as a reality for us but if we don't explore and grow we will as a species die. we have benefits in space exploration already.
There are finite natural resources on terra, for utilization by technology. We have already mined most of the easily obtainable resources, and are resorting to mining expensive to reach remote areas. Easy to mine resources were mined out in Europe first, and then the US. There are still lots of resources in Siberia and such, but good luck getting to them.
The US managed to reach the moon, back when we still had lots of easy to mine resources, but have not been back since. Maybe Space X et al can build a self sustaining moon colony, using foreign natural resources, before they are mined out too.