And why the hell people need to explain why they like in a consistent way? Some people just enjoy things without big reasons. They're not writers.
To me, Elfen Lied was an entry anime. It was the drive for me to actually like anime. If it wasn't it, I doubt I would even be posting here. I don't really care if the animation had bad drawings, no sakugas, 20 FPS, shitty story, characters whatever. I just... enjoyed it as my first, genuine anime.
If you can't articulate why you like something, then why should anyone else care what you think?