So was I, but then I noticed my jazz heroes using opens to great effect on upright bass.
IICR, the great master of bass guitar himself, J Jamerson said "play the open strings". Could have been just a habit left over from his URB days, but I think it contributed something to his "bouncy" feel. Just sayin'.
I can't say I never play open strings because I do and I do like the sound of them, but I never learn new songs using them for the reasons quoted. Once a song settles in a key then if open strings fit then I use them but I always know it in a 'no open strings' way in case the singer happens to spring a key change. He has been known to ask for one on stage seconds before we play a song if he is struggling to hit high notes.
:scowl: