Escapism...!
Anyhow, what remains to be the weakest part in fantasies about space exploration and longtime stays in space, is this: the human body.
To what degree roboits can make the need of human presence on location obsolete, remains to be seen. Some scientists claim it is the weakness of biologic tissues that makes them assume that the overwhelming majority of civilisations still living in the galaxy will be found to be robot-run civilisations, machiones, computers - or "their" "technical" equivalent of these human inventions.