> I've also known for many, many years that one day I will be dead. There's plenty of existential dread in death, yet I continue my existence building up to it.

How old are you? Because maybe we can reach immortality, but probably only if you are positioned properly for that. Anyway, for me the main drive is also curiosity on what is going to happen in the future. It's like this crazy story I want to know how it ends. I don't want to die, because I want to know what happens. Dying would be like going to sleep on a cliffhanger. I'll just prefer to binge rather than sleep.