1 John 3:2
“Dear friends, now we are children of God, and what we will be has not yet been made known. But we know that when Christ appears, we shall be like him, for we shall see him as he is.”
Very little is known about the Age After Time. There are vague references but nothing substantial. We know that we’ll have perfect bodies, a New Heaven, and a New Earth. But not much else.
Here’s my Guess:
Humanity will spread throughout the cosmos and inhabit every galaxy and planet. I believe we’ll still utilize technology to some degree. The only problem moving forward, as I see it, is that our population is infinitely small when compared to the number of planets… If we cannot multiply anymore, this would be an impediment to future colonization.