The rise of Google, the rise of Facebook, the rise of Apple, I think are proof that there is a place for computer science as something that solves problems that people face every day. ↗
As for sticking strictly to presently known science, I will simply point out that we have already experienced at least two major revolutions in science in this century alone. ↗
The mysteriousness and mystique of space is such, that science fiction attempts to tantalize you by telling you a story that could possibly be out there and that's the appeal of science fiction. ↗