This xkcd strip got me thinking about this question.
There are a lot of technological advances that we have made thanks to space travel, but would we have eventually made those same advances without that impetus? One thing that gets talked about is mining resources from other planetary bodies, but our own planet is still a long way away from that. There's also, of course, the fact that a civilization that never spreads out from its place of origin is more vulnerable to extinction.
So imagine a planet very much like Earth, with the difference being that they've all decided not to bother with focusing beyond their own immediate space. So they might get as far as launching satellites, but no serious effort or thought is ever put into visiting another world. No Venera 7, no Rosetta space probe, no Mars Rovers.
Would this stifle creativity, or would all of that effort that would have gone into space exploration be intensely focused on bettering their world?