I started watching the show on NBC in Sep 1966; Dad was a sci-fi fan (his favorite show was Twilight Zone), and he got me started on that genre. At university in the late 1940's, he wrote sci-fi stories for the English classes in his engineering curriculum. I had always liked the space program. Back then NASA events were a big deal at school, etc. So Star Trek was just a fun thing and the beginning of a long relationship.