I started off on guitar, because I didn't even know basses existed until I was about 14
My uncle has been playing the bass since before I was born, and I always looked up to him... Incidentally he's also the guy who gave me my first guitar.. a black Squier strat that he'd rescued, fixed, and resprayed! So the fact that I started on bass at the age of 16 was inevitable.
Awesomely enough, my uncle was so excited at the prospect of me starting bass, that he lent me his limited edition Ibanez Musician bass!