You do understand the difference between "theoretical" and "actual", right?
Lasers were theoretical. We now have them as keychains and even weapons grade. Quantum computing was theoretical yet here we are today with our first quantum computer:
http://www.extremetech.com/computin...e-first-real-quantum-computer-by-new-research
Theoretical does not mean impossible. ST has inspired a lot of the technology we use today. Not everything invented in sci-fi becomes real but the genre has definitely inspired advances in tech and science.
Sci-fi tech based on actual theory does not always implement the theoretical tech or process in a plausible manner but it doesn't negate the possibility of the actual application. Warp drive, in as far as the technology is technically implemented in ST, may be ridiculous or not possible but the science behind warp drive is quite plausible. Sure, we may not use dilithium crystals to mitigate the flow of matter/anit-matter to power such a thing but that doesn't mean warp drive itself is an imaginary fantasy.
In SW, something as simple as the light saber is an actual impossibility:
http://www.physics.org/article-questions.asp?id=59
Something "theoretical" is quite far removed from "magic".