Thank you for your serious and vigorous research and development into the biggest "Omg...of course!" subjects in existence. I have always felt uneasy with aging, I know that it sounds trite, but hear me out. I believe that we inherently feel strange about things that aren't quite right.
Whether the feelings are physiological in nature like a knee that isn't moving the same and gets worse with time or hanging out with the wrong people who you know are not helping you enrich your life and experiences. Or a relationship that deep down inside you know is keeping you from true love but is just comfortable.
Aging is this nagging uneasiness that I feel is remnants of a much longer lifespan that our bodies know is a possibility. We wouldn't yearn so deeply for it if it couldn't happen. We are amazing perfect machines and we have a frontal lobe for a reason. Problem solving our way back to the original lifetime warranty blueprint.
A utopia in which births would be a very special occasion and done with purpose instead of mistakes and without education. Imagine the possibilities of having mastered many disciplines and the awe in watching the ebb and flow of humanity and history. There is this fear of death that lives inside of us that could vanish and this invisible monster chasing us would be gone. No one knows what that feels like but I can imagine that it would be akin to realizing that you get to be alone with the person you are enamored with for a whole night or that you don't have to work for 3 weeks with pay....just relief exponentially extended.
P.S. Sorry for the long windedness