Irreducible complexity

I was very much a subscriber to irreducible complexity as a Christian. There are many creatures, appendages, and organs which i could see no logical path for their evolution like the long neck of the giraffe and its small heart-like organs used to keep its blood flowing properly or the bombardier beetle and its explosive concoction of chemicals it uses for defense.
For anyone who is unfamiliar with the concept, irreducible complexity basically a concept that systems could not have evolved because each piece is needed in order for any part to be functional and all parts cannot be functional throughout the evolutionary process meaning it would not be selected for.
I subscribed fully to this idea.
I used to describe it to others like this:
The wing of the bat works great as a whole, but in the evolutionary process it doesn't function and works against its survivability.
Imagine it's a mouse-like critter with long fingers and webbing, at some point it wouldn't yet be a wing and would impede the animals movement and it would reduce its survivability and we would have no bats.
Enter Wallace's flying frog.
It's pretty incredible amphibian that can glide up to 50 ft. And amazingly enough it's in that sweet spot of webbing to wing process. Isn't it crazy that a little further down the evolutionary tree we might have a full fledged flying amphibian?
As you can tell, it's not that a bats wing couldn't evolve, it's just that i lacked the imagination to understand how it might have happened. It probably didn't help i had a pretty strong confirmation bias against it.
Now I don't know if anyone else is using the bat's wing as an argument for irreducible complexity but christian scientists use a lot of other animal features such as the unusual aspects of woodpecker physiology.
In the same way the story I assumed spoke to the concept against evolution, the entire concept is flawed by a lack of imagination.
The truth can be just as strange as the fiction and our search for it shouldn't stop at our lack of evidence for the specifics of the how. Where we don't have evidence lies the starting point for truth, not the end of a path to a deity.

What am I?

I feel this is a question I must pose to myself. I am a eukaryote, animal, mammal, primate and human, but none of these things define my individuality. There is so much of me I can lose, and still be me. I can lose my hand, my foot, my lungs and even my heart and still be myself.
I used to think I was a flesh machine powered by an everlasting soul where I was. I imagined my soul and physical body were linked, but the soul was where the real me resided. But without a soul I am relinquished to rethink my position.
I am inclined to think mostly that I am a composition of my genetic being and my memories and experiences stored within. I am quite certain that if I was able to upload my every memory to a machine that it would not be me, although it is a nice sentiment. Even into another body I don't think it would be me even if it thought it was me. I think it's quite obvious that if we could transplant the mind of a professional athlete into my body, it would cut his career short. So would it still be them? Or would some of me still exist?
Even now, as I replace and replenish the cells throughout my body I wonder if I am even the me I was years ago? If every atom has been replaced, am I still me? Or do I only think I am the same me?
Would it be the same if I slowly replaced my physical body with digital parts until all that was left was an  immortal consciousness? I imagine it would be incredibly difficult to perceive such a slow change and maybe that is a hope for a future in which each of us can experience a meaningful eternity. I have been unable to acknowledge my exchange of matter as a progression to a new self up until the point I considered all of this.
I have often speculated that if teleportation were possible, it would actually be the death of one consciousness and the creation of a new one which only thought it was the original.
What I think is most meaningful of all these questions is I am privileged to be of the only species which can even ask them. It is astounding that I am no where near the apex of intellect for our kind, yet I can ponder on such things and it leads me to wonder: what other questions are waiting to be mulled over which have yet to be even thought of? Because I know that aside from scientific knowledge, there is more of me to be discovered.
One day I will cease to exist and for me, everything will cease to exist because I will be unable to observe anything. The feel of the sand on the beach. The wind moving through the trees, the smell of a home cooked meal, the feeling of deep love i get when i see my wife, all of it will be gone someday. I am existing now in a small fraction of my eternity because I am experiencing everything I will ever know, or be able to know.
Regardless of what I am, I am.
I hope that everyone can enjoy their journey to self discovery as much as I am and that mine is lifelong, not for the sake of busywork, but because there is simply that much for me to learn about myself.