I find it fascinating the range of people's opinions on this matter, and people's journeys that took them to their conclusions.
I think humans can be quite obsessed with attaching meaning to things, where no meaning may be present. However, I definitely feel consciousness is mysterious. We are atoms, the universe, looking back on itself, a mirror. And that is pretty amazing. And how this situation came to be in the first place is still pretty mysterious. And I'll think that, no matter how many scientific journals I encounter.
I think we are definitely smarter than animals, for the most part anyway. We are self aware, as are a few other species, and we are aware of our own mortality. Animals act on their genetic programming and instincts, and simply live their lives...they aren't aware of their mortality, and aren't trying to attach meaning to things as much as we like to.
So I think consciousness is DEFINITELY mysterious. My Iboga experience, and the crystal clear and lucid visions I experienced are still very much in my mind when I state this. No amount of cacti, fungi or Salvia (as much respect I have for these) would have shown me the things Iboga did...I am absolutely positive that consciousness is very mysterious indeed, and one shouldn't be too hasty drawing conclusions about it. There are, I think some 'deep secrets' buried deep in their, and of that I am certain.