Not your blog.
Elfen Lied was cool but unfortunately it seemed like there were two directors, one trying to make a Harem anime, the other trying to make a horror story. They kept switching off, and ended up with a confused product.
This is exemplified by the OP and ED. "Lilium" is an awesome operatic song sung very well in latin, and genuinely scared the shit out of me and was, to be lacking words, beautiful, and is even integrated in the plot. "Be your Girl" is a shitty Girl-rock/Jpop song composed in three minutes, and I couldn't stand to listen to it all the way through. I am more cynical these days and would probably not be able to watch Elfen Lied again, but then again, all the arguments against it are strawman points.