I started as a guitar player. And then, one magic and blessed day, I discovered that I was always humming the bass line of a song, and not the guitar chords or solos.
Me too. It was actually a music instructor I had who recommended bass to me. When I would try to write music, or pick out things in songs that really grabbed my attention, it was always basslines.
I really do enjoy playing bass. Much more than guitar, really, although I still do both.