I'm sure this sort of thread has been done a billion times before but as a multi-instrumentalist who's a member of a guitar forum I always sense a certain snobbery against bass players. As someone who's played both lead electric guitar and filled in on bass I can tell you that the later is harder; even at a meat and potatoes level. As a bassists filling in you ALWAYS gotta be on the money. A monkey can pick up a Strat, plug into a Deluxe Reverb and go to town over a backing groove lol...
"Always gotta be on the money".....how true!
I filled in on a gig recently with a band of egos who expected perfection, but who could not be bothered to send me a set list, or even to call out the keys before starting a tune. When I got to the gig and they saw I was white, they made a ton of assumptions, and the band leader said "well, we can just play a lot of blues tonight". I told him to keep the set full on funk and R&B as he normally would. Other than having to ask what key we were going to play in, the gig went pretty seamlessly despite their self sabotage. Granted they did not know anything about me or my 42 year history as a professional bassist, but what really pointed out what a bunch of losers these guys were was when at the end of the night, the band leader came up to me and said "Just keep woodshedding and you will get their some day". Bassists never get any respect from hacks. The true musicians always know how important the bass is to the music.