Art is not - and should never be - all things to all people. Every picture has a unique lens through which the photographer presses her shutter-release button. Every novel has a different set of experiences the writer brings as he sits down in front of his computer or with pencil and paper.
There will always be margins. Gaps in coverage. Pieces of the conversation left out intentionally or unintentionally.
Art should consider all people, because art is about people and our expression. But it doesn't need to represent, or speak for, or even speak to, all people.
Art is honest. Art is raw. It makes you feel, makes you think, makes you cry, makes you angry. But some art may not affect you personally. And that's ok.