Songs and taste in music

As most of those who know me know I like country music and can relate to the songs. I always didn't have a taste for country music I used to enjoy light rock it was basically some sappy love songs some of which I still like but then i started listening to country and it just hit that I liked country music. What I want to know is what determines what kind of music we enjoy is it our background how we were raised or does our taste in music just change from time to time?