So R2 was like Kenny in South Park, whose every line is something so foul it has to be garbled during editing?
To take your posted question more seriously, I was actually thinking about this today as I walked through WalMart looking for some ever-so-scarce pistol ammunition:
Lots of people think Darth Vader is cool.
Rhetorical question: Why? Isn't he the embodiment of cold-blooded evil and tyranny? Didn't he and Grand Moff Tarkin commit genocide when they wiped out the entire population of Alderaan? Didn't he torture his own daughter, cut off his own son's hand, personally murder countless people by his own hand?
Answer to rhetorical question: Darth Vader is cool because he is a bad-asz. Tell me you wouldn't like to have the power to choke people over the phone. Or that you don't chuckle in admiration when he starts force-choking that smart-mouth general and says "I find your lack of faith disturbing."
Many people admire a bad-asz, good or evil. Especially if the bad-asz is only shown harming people who look like they deserve it, while the truly horrible crimes occur off-camera. Nobody saw the details of Alderaan's women and babies being incinerated by the Death Star, but we all saw him force-choking various arrogant boot-lickers.
Good guys often come across as dorky boy scouts. Mark Hamil's Luke Skywalker was a likeable-enough character, but he was a young punk. The good guy everyone thinks is cool is Han Solo, because he wasn't really a "good" guy. He was a self-serving smuggler and an outlaw, and he didn't even blink when he had to waste Gredo. And he got the chick.
Much of this parallels real life. Many people in Russia still admire Stalin. One supposes those people have either never seen photos of dispossessed farmers starving to death, or have turned a blind eye to the facts. Stalin "kicked azs", and people always admire a winner. And I have to admit that even I would rather have Vader on my side in a fight than a teenage moisture farmer from Tatooine.
So, is Star Wars morally corrupting? Probably not. But it is an interesting mirror of society.
Next question: do I waste entirely too much time thinking and writing about Star Wars? Maybe. Anyway, Wal Mart was out of pistol ammo, so I can use my range time for posting on OF instead.