Do you mean, does believing in God make me a better person? I believe so, however that would assume that not believing in God would make me a worse person in my day to day life which I don't believe. I know many atheists that are more godly than those who claim to be religion.
The value I place in my own life for believing in God is having a how to this what. A how this universe came to be. Not to mention that looking at the example of Jesus, carrying for the poor, carrying for those who were treated as lepers, literally and figuratively, gives a fantastic example. Being angry at injustice in the world and trying to rectify that. Those are values that I place on my faith.
My faith in God is also valuable in my life in that it does supply me with hope. Hope that there is a reason for all of this. Hope that those who are suffering will experience joy. That those who today hunger will ultimately be fed, here and tomorrow. Etc... That the beatitudes will be experienced by the very individuals in whom Jesus had in mind when he made the proclamation. However, on the flip side, does one need to believe in God to have this hope? No. But I find my hope stemming through my faith in God.