Think about it - from earth, we can only "see" 13.5 billion light-years away; no matter what direction we look. If we were anyplace else in the universe, we could only "see" 13.5 billion light years away, no matter which direction we look. In a sense no matter where you are in the universe, you are at the center, because you can only "see" for a distance of 13.5 billion light years. Light from 14 billion light years away hasn't reached us yet. Just my philosophical quantum opinion - I might be wrong.