Interesting -- yes; surprising -- not at all. After all, religions (whether true or not (there's only one true religion but I'm not going to tell you what it is)) serve the same deep human psychological needs. What I find curious about most versions of an afterlife is this: they all describe life without death, and some (including singularity) describe a pure spiritual (non-corporal) existence. Each of these things on its own -- let alone together -- makes that existence in the afterlife distinctly non human. Whatever we're reborn as, it's no longer human, but somehow it's not only us, but us as we'd want to exist. Note how religions that believe in reincarnation are different in that respect: they promise a constant re-birth but always in (at least hopefully) human form.