It is only due to an inner conviction in our hearts, shared by every human being, that there is a Judge, that there is right and there is wrong. And so, when we see a wrong, we demand an explanation: Why is this not the way it is supposed to be?
That itself is belief in G-d.
Our job is not to have faith. We have faith already, whether we want it or not. It comes in our blood from our ancestors who gave their lives for it.
Our job is to transport that higher vision that gave them their faith down into our minds, into our personalities, into our words, into our actions in daily life. To make it part of our selves and our world.
You write to me you are concerned that you don't believe. If you don't believe, then why does not believing concern you?