One of the things that makes unix so special to me is how many different ways I had the "Aha" moment.
Viscerally, I got drawn in after I tried writing some Batch script for a windows machine and found bash so much easier.
Intellectually, ESR's Art of Unix Programming really shown a light onto what made unix feel so fun. Seeing the unix principles laid out shortly and clearly was world changing.
Then when Apple and Google pumped out 3 BILLION unix like devices and made unix mainstream, it just nailed it in that unix is a really special piece of software.
Tyler