User blog comment:B214/Question and Answers 3/@comment-67.83.199.116-20140730041849/@comment-24421137-20140730044008

It just seems to be a too disappointing ending, since most people are pulling for a harem ending, everyone getting married as the final scene, which I think would satisfy both the author and the readers. Also I think it would be too much of a hentai ending, and just doesn't go with the flow, of the ecchiness, as well as the fact that Rias and Issei's first kid was conceived out of pure animalistic instincts, and not love, which would also disappoint people.