My Dad was a drummer so I started out as the world's worst drummer at the age of 8. That was definitely my Dad pushing me. In my teenage years I revisited music & I always had people tell me I "looked like a bassist". I took this statement as a compliment but I'm suddenly wondering if that was meant as an insult!?! I've gone on and played guitar (lead, rhythm & acoustic), mandolin, harmonica, lap steel and banjo onstage (to very varying results!). Bass is my main instrument but I agree with the OP it's really about playing music. Bass feels like a second skin but if a really cool band came along and wanted me just to play mandolin I'd go with that over playing bass for a band that wasn't quite right.