My personal great triumvirate of favorite composers is Mahler, Wagner, and Strauss.
The similarity I find in the three is music so heavenly, inspirational, transcendental and "up in the clouds," that it leaves others behind, crawling around on the earth. There! If that doesn't show how subjective "being a fan" is, I don't know what does.
In the same vein, Mahler once asked Strauss about the motivations behind his music. He was somewhat surprised when Strauss did not say he had some mystical, divine inspiration, but simply answered that writing music was what he did; and he was very good at it. Strauss further pointed to his mansion in Vienna, with the words, "Salome built that for me." Once at a dinner with Mahler and others, Strauss picked up a plate, and scratched on it with his fork, making that irritating "fingernails on a blackboard" sound. Strauss beamed and said, "I can make that sound with an orchestra."
I always feel (subjective, yes) that Mahler was divinely inspired. Hearing the beauty of some of Strauss' music, I share Mahler's shock and disbelief that Strauss was writing it only to make money.
--John Haueisen