I don’t feel like this is exactly right but it’s hitting some of the same notes. Divided by Infinity by Robert Charles Wilson
!The one I remember ends with the main character essentially becoming the singularity, but this ends a little differently. Equally as sad as I recall though.!<
I read a short story about this, and can’t remember the name but I remember how hollow it made me feel.
Damn now I wanna read it, any more ideas on finding the story?
https://reactormag.com/divided-by-infinity/
I don’t feel like this is exactly right but it’s hitting some of the same notes. Divided by Infinity by Robert Charles Wilson