First of all, my parents never sent me to a religious institute & I'm not even religious (I don't even pray & use drugs which isn't allowed in religion); I was just giving a true example above.
Now coming back to the main topic..... I believe in God because it's impossible for such a stupendous and disciplined universe could come into existence without a creator. If you look deeply into the universe, you will find there a definite cohesion & discipline. Nowhere you will find any confusion:
The sun is travelling along its axis and the moon in its own axis. The sun never enters into the axis of the moon and the moon never leaps towards the sun. Similarly the night remains for a particular period and the day upto a particular time. In every particle of the universe you will find a peculiar precision and special discipline.
The discipline and cohesion of the universe is the obvious proof of the existence of such a Great and Super Being Who created all the beautiful discipline in the universe.
(Sorry for answering late as I'm busy with college nowadays)