Is this "an event horizon"?
Death. At which point, my first-person perception of who I am and what I have experienced ends.
Implications:
[1] This first-person perception of who I am and what I have experienced ~ that I am aware of now, for example, as I type this ~ is all the more precious and worth savouring, uncluttered, as it is, by a preoccupation with hoping or pretending to "know" it will somehow NOT end; and
[2] When my first-person perception of who I am and what I have experienced ends, my "afterlife" begins, and that "afterlife" comprises a kind of loose and variable - and finite - collation of the memories, individual or collective, secret or shared, accurate or inaccurate, positive or negative, of those who survive me.
[3] ...sentiments and memories so strong, no wonder our more primitive predecessors deduced that the 'spirits' of their ancestors and deceased friends and family were actually present among them.
If death is "an event horizon", then what evidence is there that there is something beyond it aside from the particular "afterlife" that I described/defined above?
-Removed-Clatter trap.
The "event horizon", for a Christian, isn't a black hole.
Your brand of christian zealotry is abhorrent to sound biblical doctrine and antithetical to what the scriptures teach.
This statement is grammatically bizarre; "At this level of zealotry they cannot be reasoned with no matter how abhorrent or contradictory their belief structure has become..."
I think your synaptic structure has collapsed into a black hole.