I haven't yet seen the Get Back documentary about The Beatles, but I've been watching various clips of it online. One of the surprising things about what I've seen so far is the rejection of some of George Harrison's songs: specifically All Things Must Pass, which is one of George's best all-time compositions. Like many of his other songs, however, John and Paul dismiss it.
I genuinely don't understand this mindset. My best guess is that there's a lot of ego going into these decisions (and likely jealousy). As a member of a band, whose very existence relies on making music, shouldn't the group welcome every single song or idea a member comes up with? If I were in a band, I feel like I'd want to embrace every idea that came along. More ideas lead to more songs; that, in turn, leads to more albums, more sales, and more touring possibilities. It seems like a no-brainer to me. Think of all the great music the world has been denied because of petty squabbles between people in a musical group. What a shame.