+ 1. I'm also an appreciable guitar player, but I never feel at home like playing bass...I sing too, same thing. The only way to feel at home is by playing my basses. If I have to play only one root note in a 10 minutes song, it's ok, the bass simply IS my instrument.
I know exactly how you feel.
Despite being somewhat proficient on both guitar and bass, on the occasions that I'm asked to play rhythm guitar, I'm never as comfortable or as satisfied than when I'm playing bass.
