That's tough for me to accept. It seems to make much more sense that everybody is asleep in their graves right now and nobody is in heaven. It fits in exactly with what Jesus taught about nobody "ascending" to heaven and nobody ever seeing God the father.
At some point I think we will be outside of this physical universe and will be able to "see" and commune with God the father.
I was just reading some interesting commentary on this idea, heavy on Scriptural and Patristic sources. I'll try to find a couple of passages later and quote them. I believe that the traditional position is that the Person of the Trinity that will be manifest to us in heaven will be the Son. We will be aware of the presence of God the Father, but He will still not be visible to us.
The church fathers distinguish between the essence and the energies of the Father, and speak of how we can know Him, or commune with Him, through His energies but never through His essence.
I don't have verses at the moment, but don't even the Seraphim not see the Father - two of their wings cover their eyes?