An odd fact about my life which popped into my head a bit earlier...
I was about 15 before I figured it was OK not to like the kind of music my parents liked. My mother doesn't really like music and my father likes old 50s/60s type stuff and general MOR stuff from the late 80s.
Up until 15 I always assumed I should like the same stuff. From then on I started to buy my own CDs and discovered that my tastes were a bit different - I tend to like everything from hard rock to folk.
The first CDs I ever bought were Alanis Morissette's "Jagged Little Pill" and The Lightning Seeds' "Jollification". The most recent were Kathleen Edwards' "Asking For Flowers" and Laura Marling's "Alas I Cannot Swim".