People who are simply non religious are sometimes labeled as Atheists. To not have a religion or any interest in religion is different to not believing in a God.
If there is an intelligent force at work in the universe does it take the form of a Deity? I for example do not consider that existence of a deity as described in holy books and scriptures is realistic or accurate. I have no time for organized, commercialized religion. This does not mean that I have ruled out the possibility that the universe is permeated by a coordinated intelligence.
Such intelligence does not have to have a plan or fixed moral rules, but could operate by a very different kind of process to the one that goes on in our heads, that we choose to label as intelligence.
So before we enquire into one's belief in God we have to define God