The idea "all everything home" reminds me of the idea of energy transfer following death. The idea is that the body contains our soul essence, when we leave this body we return to a collective consciousness it is described as feeling "like home". This would make sense as the author refers to the singularity which seems distant from human worldly suffering and closer to what we think of as "home".

The poem seems to be a rumination on what it was like to be contained in a single consciousness or "singularity" before whatever events took place at the creation of time.