My little fan theory.

So i been thinking - If Mundus was created by Aedras and now they are pretty much powerless and Daedras and Daedric princes visit nirn only to have fun or terrorize mortals and if someone kill them they are just sent back to oblivion and after a time they come back to have more fun isnt the Elder scrolls games mostly just about hero who ruins fun for daedras ? And the whole Daedras - Nirn relationship is just about Daedras having fun without fear of any harm coming to them ? That would make nirn and mortals just a toy to daedras that want to have fun with them?That would make mortals just a toys to daedras and elder scrolls lore cant have ending of great hero deafating great evil ( powerfull daedric prince) but just an Daedric prince sended to oblivion and probably just laught about it and return back later ?Are mortals really that weak?Yes i know you have killed daedras in some events but thats rare.So the whole Nirn is just a dangerous entertainment to daedras ?And yeah sorry for bad english.