How do I get my band to appreciate me?

I'm the bassist in a band. I feel unappreciated by the guitarist and
particularly the drummer. I'll start with the guitarist. He, at least,
understands the importance of my role in the band. But he obviously
thinks his instrument is far superior to mine. I remember once we were
talking about how Jimmy Page first played bass in his band but then
got put on guitar. He described it as Jimmy Page getting a huge
promotion. Another time we were talking about how Paul McCartney first
played trumpet and then guitar and then bass. The guitarist said that
he got a promotion and then a demotion. I'm not saying he's not
entitled to think his instrument is better - I think bass is better
than any other instrument - but I wish he wouldn't constantly talk
about like it's a fact. Now for the drummer. He obviously see's no
point in me being in the band, which is really bad because we need to
work together being the rhythm section, but I don't see how we can
when he doesn't see the point in bass. He's said before that he hates
bass and that he doesn't think it's neccessary. I don't know what to
say to him. I just feel really underappreciated. ANy suggestions to
what I should do? And I don't want people saying 'leave the band'
unless they think that's the only thing to do, because the guitarist
and drummer are really nice guys and my best friends.