OK, that's purely subjective. In particular, a band with one chief songwriter (like CH) would benefit greatly from being able to read/write music. For example, if Nick or Paul had to miss a concert, a replacement player could almost surely get up to speed much faster if he could read music.quote:i don't hand out sheet music and say "play this!" thats not what a band is meant to be.
The thing that really blows my mind (again, no offense) is that learning to read music is relatively easy. Well, I don't mean it's simple for everyone, but it's like riding a bike -- once you learn it, you''ll probably know how to do it forever. I just think the reward/effort ratio is so high (for most people) that just about everyone should be trying to learn.
Full disclosure: I can't play any instruments (although I am teaching myself guitar). However, I am a singer, and I can't stress enough how useful skills like reading, writing, and sight-reading are. Like Camus said, there are many times when it's not possible to listen to a song before you have to play/sing it -- particularly if you need to hear it more than once.
BTW, for some reason, I think I heard Stevie Wonder uses some kind of Braille system to read music. Don't ask me how (or where I heard it). I could be wrong.