Growing up, my parents had one of those Magnus Electric Chord Organs in the house, and from when I was very tiny I would pick out stuff note by note. When I was about 10, I saw a red guitar in the store & they bought it for me for my birthday (hey, it was only $10). Eventually figured out how to play it, didn't have lessons but learned to read music in school and eventually learned how to compose chords and read chord charts. Still was never serious about it, but when my dad died I threw myself into it more as a way to alleviate what I was feeling. There was never any conscious decision to pick up an instrument, it just kind of happened.
My personality is who I am. My attitude is who YOU are.