voices of a distant star

I've got that friend which is drawn into sci-fi and mecha(s) (giant robots), he mentioned he was searching for that short animation film that i found and watched tonight : Voices of a Distant star.
I realized while chatting with him this afternoon why i couldn't believe in the fantasy of sci-fi, in movies, books, comic strips, or whatever...
the technology depicted in those are simply unreachable for me, it can never ever exist, never ever be realizable one day, for me it's impossible, for one simple rule : the impossibility of having this much energy.
Everything that is shown in sci-fi : teleportation, tractive-beams, hyperspace travels, considering the rules of physics from that universe will require an energy that we don't have and that we can't master, maybe we can already pull one atom at the expense of huge energy but moving a whole spaceship or simply a car thanks to a tractive-beam is inconceivable for me, and even if we probably haven't found all the interactions of matter, the reactions, some phenomenon that are still unexplained, some unknown rules of physics, this won't erase the fact that an extraordinary amount of energy is required, so unless we find a miraculously strong and abundant source of energy somewhere (and i think we mainly rummaged the whole planet by now) it is definitely impossible to realize those sci-fi feats, but i'm far from an expert and this is only my opinion;
What i wanted to point out is that because for me what is displayed in those shows is clearly unrealizable then it has no depth value, it's only entertainment and not something that i can take and store as a truth in my brain, and because i am highly interested in the explanations of the actual reality i tend to skip the sci-fi craziness and consider it as funny but unreliable.

This brings me back to that short film, full of sci-fi nonsense and giant robots, but there's something that caught me in it, the beauty of two persons who decide they will love each other no matter the obstacles, the distance, even defying physical time, there's something soft and melancholy, some piano notes, so light that we hardly hear it, in the end it is cheesy, and surely the point of view of a romantic male, but why not tonight, let's drift in space and open our hearts to indestructible love.

http://www.veoh.com/watch/v632651BKHPaN6M?h1=Voices+Of+A+Distant+Star

And a melody to lull you into that dream : voices 
(i picked one here but really many tracks are very touching for me)

Bonus screenshots that i found interesting to link all this to reality.