Board Thread:Warhammer 40k General Discussion/@comment-92.97.77.182-20130321145115/@comment-24944355-20141008090130

The warp exists throughout the universe entire, as such the chaos gods exist anywhere in the universe where there is life that can influence them. Considering the size of the universe it is a given that are trillions of life forms out there that would impact the warp. That this is not stated, and all canon constricts on this galaxy alone, is due to the writers not wanting to deal with the added complications to their stories it would entail. So through laziness or a simple desire to keep things simple we are left with a huge gaping hole in the logical basis for the part of the canon that deals with the warp.