From having listened to Dr Pamela Gay on Astronomy Cast for the last few years, I thought the general line of thinking now was that there is no center (or if there is, it's "everywhere") due to way it loops around on itself.
There is no "general thinking" because no one's measured the edge of the universe to see what it's like. And certainly no one has seen the universe "wrap" around itself. In the absence of evidence, everyone just picks the model that looks best to them on paper.
From having listened to Dr Pamela Gay on Astronomy Cast for the last few years, I thought the general line of thinking now was that there is no center (or if there is, it's "everywhere") due to way it loops around on itself.