User blog comment:Relite25/What do the people want in a dlc?/@comment-176.45.119.232-20120816181543/@comment-3202167-20120817121023

''Unlike the powerful Daedra, the Aedra do not have their own native planes within Oblivion. Rather, the act of creation bound them permanently to the mortal plane. Additionally, their power was so reduced that the Aedra lost the ability to manifest themselves physically or to interact directly with their creation. This limitation is one of the prime forces behind the existence of daedra worship; since the Daedric Lords did not give up their strength to create Nirn, they retain the power to interfere with the mortal world and are thus attractive to the power-hungry among the mortals.''

There. From the same article.

Also, dont people view worshipping them as kinda eh because they are well...mortal?