Humans don't seem to be progressing toward that goal...

Wow dude. I'm dying to know how that's possible in an individual sense. Or any sense.

My viewpoint from the start came from logic and reason, but it was more from an empirical manner.

It stems from another topic I posted about where I claim that the concept of "the one" in a relationship is really troubling. Uniqueness to me is not possible in quantities as large as human population, not that we humans can prove yet anyway. My personality, physical features and other specs could easily be the same as, or at least very similar to another's. So in that sense, I am easily replaceable.

Similar yes, the same as, no. That is a world of difference. Twins are not the same person no matter much they resemble each other personality wise or physically. They never know what's going on in one another's mind. Just as I don't really know what's going on in your mind. It doesn't matter how many humans exist, each are their own UNIQUE individual person. What isn't unique are human concepts, like the one you mentioned. Which is what's blinding you in my opinion.