Isn't god something that we just need to "create"?

There are many problems with the idea that people believe in God only because that's what they were taught as children. For example, belief in a God of some description is a feature of every human culture. Why that universality? The Bible says it's because the God who really exists built that knowledge into people. Pascal said there is a God-shaped vacuum inside every person. I know of many people who were raised in god-less households, and became convinced of the reality of God as adults. C. S. Lewis is a well known example. An atheist as a young man, he became a believer almost against his will, because he could not deny the evidence of God's existence and activity in history. I would say to anyone who seriously wants to know whether God is real, don't dismiss belief in God as the relic of childhood fantasies. Instead, carry out an intellectually rigorous investigation of the evidence, without preconceptions, and see where that evidence leads you. Many who have done that have become, like C. S. Lewis, convinced believers.

As for your title...We do not create God...God created the earth and everything on it.... It is up to parents to teach their Children, and teaching about God is the most important thing out of everything else. People that have God in them they do not have to search for things, all they have to do is depend, and trust in God to get them through what ever is happening in their life. Faith is what people have....but if you need proof all you have to do is call upon the name of Jesus Christ ask him for the truth he will show it to you.....

Children will grew up and create God in the way that they want to believe.

True Children will believe anything. It's an survival instinct to mimic your parents or people that are close to you. That's why people in a Christian society believe in one God and people in Greece around 100 bc believed in many Gods. Nowadays its difficult to find a good reason to believe in a god or gods. We now know that the creation of the earth and man is rubbish. Darwin and after him many scientists proved that the evolution theory is a fact. Man is not born out of a rib of a woman. It's called the God of the gaps, everything science can not explain people use the magic hand of God to explain stuff. We do not need God any more to lead us to a happy,moral and purposeful life. Life is wonderful. The stars, the universe and everything. Luckily my parents never told me about god, My father told me stories from the greek gods and heroes like Hercules and these where exciting but just stories. It's the same with the bible, just stories, some great, some cruel and awful. But it's not the truth.

While childhood teachings do bear an effect on a person's beliefs, it is not correct to say that anyone's religious beliefs (or lack of them) are only because they were drummed into his head as a kid. As an individual grows up, if he is exposed to ideas from both sides of the argument, he will carry out an intellectual debate with himself to decide which side to take on (or to remain agnostic).