I still remember the first time (as a layman) I studied the details of how DNA and genetics work.
You usually get the sense from popular science that DNA is just dices rolling and mixing up genes and everything is totally random, then as soon as you start looking up how things actually work, you find out that your body is composed of actually nanobots with some kind of will, or scope actually, that work within your body doing super complex tasks, and that as of today (well, as of when I read that 10 years ago) we yet don’t have a specific idea of how those nanobots move and reach the places they’re supposed to reach.
our body is an amazing machine, amazing in a way that goes waaaaay beyond our comprehension… I recently started studying the immune system and that’s even more amazing!