I remember my realization.
I was returning to Canada from England on an Air Canada 747. Sitting beside me was a young woman -- I too was pretty young at the time -- who happened to be a great conversationalist. One story she recounted was about a video party she had with friends in London. The group rented four movies, one of which was a documentary.
In summary she added: "The best film was the documentary."
For some reason I often find documentaries to be my favourites. With an emphasis on that film form today -- helped by easy access to high resolution imaging equipment -- I too prefer on average to sit down with a "good doc". Reality trumps.
Ready to go: The Russian Woodpecker.