Watched all 13 episodes of Elfen Lied today. I have to say, despite
what Soup Miner thought of it back in '09, I thought it was a pretty good series. Very, very graphic at times, and a lot of characters were, well, complete and total scumbags, but I very much enjoyed the issues of morality and humanity/"what is a person". (Which I always do)
Also, Soup, I know this is 5 years late, but a couple things;
"Also "they are born to kill humans" is a fucking lame explanation for superhumans that go on insane killing sprees."
IMO, that's simply an excuse used by the scientists to justify what they're doing. [Ironic, considering what's happening at the top.] Personally, I think the truth is simply what you suggested would be a better explanation; Psychological issues. If you're mistreated for your entire life for being a bit different, you gonna snap and kill
someone. Everyone.
"Dead should mean dead"
Keep in mind you never actually see the outcome of that fight, though. She appears to gets the crap
beaten shot out of her, but it's possible she won out or escaped in the end.
Anyway, pretty good anime, if one that had to be cut down a lot from the manga (so I've heard) to fit into the series. If you like anime or philosophical discussions, (or both) I'd recommend it, assuming you're 18 or older; There is quite a lot of nudity, graphic violence, language, and mature subject matter.