johnnydoom The fallacy of believing that the universe must have been created is that you'd then have to wonder who created the creator, no? If everything has a beginning than nothing can ever exist, because everything had to come from something else. That is one of the few impossibilities in our universe.
More likely, I think all matter and energy that exists now always has and always will. It interacts differently under different circumstances.
"Time" as a fourth dimension is really interesting. We sort of acknowledge that it is, passively, but it's hard to fathom what moving around in it as we do our three normal spatial dimensions would be like.
Consider this - if you and I were meeting somewhere, you would not want to know the place without the time, nor the time without the place. You need both, the place (x y z coordinates in space, simplified by maps) AND the time. It's a critical fourth dimension. To be in the right place at a different time is to be in the wrong "place" altogether.