These phonecards may possibly or could not be the exact same phonecards printed (together with some of the former ecchi calendars) in a book Gainax published in 2005 with erotic Eva artwork. For me, the conclude of EVA is not a unhappy ending, it is not a tragic ending, it is a pointless ending. Your view would make it a unfortunate ending but with a hope shining vibrant in the distance, a hope that the planet could be set back collectively.