That is a fact. That is not a reason that makes you believe in god - its a strong point, yeah, but at the same time its not why you believe.
You see, there is evil in this world, there exists exorcism, demons, all these kinds of stuff, which you may or may have not experienced. I have.
I have heard people talk about possession, there have even been deaths caused by these malevolent.. lets call them - beings. They are created. We do not know why, but they exist.
Religion is here, to go against them, and protect the human race against the "other dimension we cannot see" (if i may call it that).
And there is evidence of demons being real, and even possessing someone, i know for fact, the grandmother of my friend, was god damn levitating on a 4 centimeters distance, and they sent her to church only to discover there were 40+ demons manifesting her body. That is one thing that makes you believe that evilness exists. But if evilness exist, they must have a creator of it, also know as the devil.
On the other hand, you see there is beauty, passion, all these good things we live and long for, which proves that there is goodness. Now what the church did was remove the demons, it took time, but eventually it happened, and what her grandmother had to do is welcome a holy spirit inside her, and with the holy words, and her grandmother's will to welcome the angel to save her, she was saved. For she would be doomed if she rejected the holy spirit. She pushed herself even though she could hardly talk, to say yes. That is a good explanation and proof, that holy spirits, also known as angels, exist.
Now, if there exists a force covered in such greatness... then that greatness may be it... God.