In all the Lore books, there is are two accounts of a meetings with Aylieds not during war time. Both times they not only helped, but saved the lives of the authors. (I think)
One of those accounts being Carlovac Townway's heavily romanticised
2920, The Last Year of the First Era, where a naked Wild Elf helps a distraught Dunmer woman birth her child in the middle of nowhere. As a whole though, I think their society would have indeed been quite perverse, cruel and sadistic - Just look at the murders in Knights of the Nine, they seemed especially brutal.