I believe that in any activity that you do, you got to know what you're doing! Accuracy is very important, and in order to be accurate, you have to research and find truthful knowledge so you can make informed decisions.
But I also believe the definition of what passes as "good sound" still depends on the individual. I appreciate good sound quality from my audio equipment, but then again, I don't want to be constantly obsessing about what's better out there, when the music I'm hearing from my current equipment is enough to get me through the day!