I wonder why they got indignant. You only mistakenly called our instrument simple, and said we aren't as important as the other band members.
It's actually hard to be the bass player. You're listening to the drummer, matching his groove, wrapping your lines around the cool thing he's doing with his high hat. You're listening to the rhythm guitar, matching your fills to his gaps, and you're listening to the lead, not making your fills jar with his lead. And at the end of the song, when you ask the guys? Nobody but you noticed that the drummer even has a high hat, the rhythm guitar had no idea he was out of time, the lead had no idea his guitar was out of tune, and the drummer didn't realize that he did a fill every bar stepping on everyone's toes. They all know exactly what they did or wanted to do. No idea what the hell anyone else did. Just fretting the notes or bashing a snare is the easy part. Any trained monkey can figure out where a C note is on a neck if you have enough treats and a day to kill. Bass players have to see the whole musical picture, in order to know how to tie it together. Root note or complicated bass line. Only other players I've ever noticed that see that picture are keyboard players or talented multi instrumental players.