Dude, Hideaki Anno wrote the story to Evangelion with depressed otaku and komori-zoku in mind as his target audience. The whole point of the show is that you CAN find a reason for living in whatever you do. Shinji can't see himself as worthy of existence without piloting Eva, but in the last two episodes of the TV series, he realizes that he can live as a normal person and have worth in the world. In the movie ending, he rejects an existance devoid of pain or pleasure in favor of the world we have now. He acknowledges that pain is necessary and that humans will misunderstand each other, but interacting with each other and experiencing pain is the only thing that will lead to true happiness.

Evangelion's a great show for depressed people to watch, if they can see the director's true message.