Above: Yub Nub Chub Devourer of Souls and patron saint of Ewok Disco
Seriously, the only reason that these fuzzy little pagans didn't kill the cast of Jedi when they capture them is because they think C-3PO is some sort of mightier war god or something, making it the only time in Star Wars history that C-3PO wasn't a complete waste of metal.
Why the Hell do we think that Ewok's are cute? If a species first instinct upon seeing a newcomer to their little hippie tree town is "Hey, you look like you'll burn nicely!" IT'S NOT A CUTE ANIMAL! It's a dangerous little beast with very strange theological ideology that should be feared and destroyed.
And to further my insane hate-rant against Ewoks, is the fact that in the wildly popular made for TV movie Ewoks: The Battle for Endor acclaimed actor Wilford Brimley (yes, THE Wilford Brimley) played a strange hermit character who lived peacefully among the Ewoks. How could this be? How could the war-loving Ewok society approve of this oatmeal enthusiast. Well the only reason I can see of why they wouldn't burn his supple man-flesh is that they fear his mighty Diabetes. That or they're just big fans of Cocoon.