You've taken polls?
Why buy a bass? Why practice? Heck, why even bother to show up if that's how you feel about it? You're just wasting space up there that could be used for another guitar player.
Underestimating their audiences is the number one biggest mistake that musicians make. I firmly believe that attitude is what keeps certain musicians from getting anywhere with their music. Audiences are way more savvy than many musicians want to give them credit. Some might not know the difference, but many do. And by now, everyone's heard music through a nice system and they can easily tell the difference between music played on a $50 boombox vs. a $5000 stereo. At my shows, I have many people either compliment or complain about the mix. And you know what? They're almost always right.
Sorry, but I find that attitude arrogant and self-defeating, and crappy bars that pay musicians nothing are absolutely full of musicians who feel that way, and they will never get past the level they're at because of it. It's not the audience's job to take your sound seriously...it's yours.