Whether a person believes there is physical life elsewhere than earth or not surely is not a poison pill in his walk with the Lord.
I suspect Abraham would have had no reason to think about extra-terrestrial physical existence even though he had direct personal experience with a created being not of this world though he was in this world, e.g. Melchizedek in Genesis 14.
But then "world" to Abraham was probably limited to what he could physically sense with his eyes, ears, etc. And although Melchizedek brought forth bread and wine, we cannot say based on Scripture whether he was a spiritual being appearing as an illusion - or a physical being intersecting Abraham's 4D existence - or perhaps even a visitor from some other location in the universe.
Indeed, we cannot really know whether we are entertaining angels.
Perhaps God never created another "living soul" that way. He doesn't say that He did.
God's Name is I AM.
I agree A-G and you make a good point re:Melchizadek.It does seem he appeared physically to Abraham.However there are others,sinister and malevolent who might well be hitching a ride on man's worldly desire for a physical (carnal,natural) saviour.ET would fit that bill all too well (and the morphing of little green men into 'interdimensional beings' these days only reinforces that.
There seems not to be any real evidence of physical life anywhere but here,many and varied assertions notwithstanding.So I disagree that erring on the side of caution is arrogant and scripturally unfounded.
Anyways thanks for tolerating my nose up against the window.Maybe I was just simply offended.Which would be dumb.
Grace and peace to you both.