I feel like this is kind of a paradox. Part of the point of God (at least in my opinion) is that he/she (whatever the **** you want) isn't logical, and is completely separate from that realm of thinking. I would say that if someone made a logical argument for the existence God, there would be fewer atheist (see DesCartes' meditation where he "proves" the existence of God, lol).
Also, about the existence of God: I don't think there is such a being, and even there was such a being, why would it care about us? My thinking is that if a "perfect," transcendental being existed, we would be less than the ants that we care so little for. (if you want to try argue against this point, don't take the ant thing too seriously). So essentially, I'm saying that even if God exists, it's probably irrelevant.
This is pretty lengthy, but to answer your question:
It is difficult to contemplate on, but there is logical reasoning to back up belief in God.
I believe that God is one of the many names of the divine being who created the universe. He possesses no beginning and no end, and is infinitely beyond human comprehension and everything regarding humankind. Without such a being, the universe could
not have existed. Without a God, I tend to view the universe as a painting without an artist, or an invention without an inventor.
You see, I believe that everything in existence that begins originated from something. Otherwise, what reasoning could you use to explain its existence? So for the universe to make sense, there must be an infinitely superior being, who has always been there to control it.
On a more specific note, one of the numerous mysteries of the universe is the explanation of life itself. Why do we exist and how did we come to be? These are questions we may never answer, but without some divine presence, how can you explain why we are actually living? Our bodies function, but the question is: why are we
alive instead of like machines? We, as humans, have managed to build automobiles and computers, which possess components that cause it to work, but it has no control. We
do have control, though, which makes me wonder, from where was that control originated and how it was implemented in our bodies? I have theorized that this is what believers refer to as the "soul", the actual
living part of us, while our bodies are actually like machines that eventually lose their strength and die.
But why would God care about us? One word: Grace -- the act of giving what is undeserved. The purpose of our creation, theoretically, was that some type of
imperfection must exist in the universe to make it complete and to give God meaning. Without imperfection, perfection is absolutely meaningless. They are like two sides of the same coin, so to speak. Though we are imperfect and infinitely below God, he walked the earth in human flesh, as one of us, and suffered the punishment we deserve. That punishment is
suffering and death. We believe Jesus Christ was God, though, because it was recorded that he
never sinned against God's will. By comparing Christ to his followers and the people who lived during that time period, you will realize how innocent and perfect he actually was. According to the recordings, he never contradicted what was believed to be God's will, in actions and words. But it also requires faith to actually believe that Christ was God in human flesh.
Though you didn't mention it, I'm also going to briefly explain one of the most crucial elements of the Christian faith: Salvation. This is the best way I can think of to explain it. There was a moment not too long ago, in which it occurred to me that if I was actually in the presence of Christ dying on the cross, I would have been passionately begging for forgiveness, wondering how I could ever betray Him again. Unfortunately, it is human nature to sin, so once we have repented and realized the undeserved pain Christ, our God, endured, God forgives us, through grace.
Very few people have yet to come up with a reasonable explanation for God's existence, particularly because of faith. However, I believe most of faith comes from searching for explanations and explaining to yourself what it all means. Though what is interesting about that is that it
cannot be done without first questioning your faith.