Well, if we keep up this kind of intellectual equivocating in the face of urgent existential problems, Hank, then perhaps the human race will die with us (i.e., with our generation). And then the question would be moot.
On your second question, if you haven't read the Tegmark article on quantum multiverses, please do yourself the favor, for it clears up some of the relevant issues WRT theories of universal "horizons." As I recall it was the Level II multiverse model that provided scope for the expansion of the universe to forever outrun human observation. That's a possibility. But there are other even more interesting possibilities (IMHO) as well.
I read that one of the names for our entire expanding (it appears) universe -- encompassing nebulae, galaxies, solar systems, planets, moons, ecosystems, etc. -- is "the Hubble volume." A volume must have a "border" or container of some kind; or it couldn't be a volume.
Earlier on this thread, bigcat00 made an observation about Eros in connection with Plato's thought, and characterized it -- most accurately in my view -- as the passionate love of Truth, which to a Christian like me is another Name of God.
Plato's Eros was taken "to the next level" in Christian faith, where it was christened in the name Agape.
Humans tend to have a nose for truth. That is, if they're paying any attention at all. Which the distractions, din, and sheer cacaphony of life in the present culture often makes difficult.
Still, maybe we just need to "follow the scent" more....