I don't know Bingo, its a question I've never given much thought. It's almost akin to asking, well how can a big giant space slug be a revered gangster who gets pissed off when it deems its been repeatedly avoided by a human smuggler who owes him a debt. How could such a thng display human sentiments and emotion? It just is because its Star Wars and its fantasy and its the greatest thing ever (the OT anyway lol). Star Wars (for me personally) isn't something that has ever required people to question the ethics of it. It isn't that deep of a fable, and isn't meant to be viewed as such.