Your statement is quite generic....can you specify some of these cultures as i am not agreed with you....

We can't segregate god in terms of ethnicity, geographical boundaries, age, religion, gender, etc. The god is a mental image needed to all of us for doing good things in the right manner that lead to positive effect on human kind.

I have a simple question to all, can any one us concentrate on zero or null without thinking about anything such as no family issues, no money, no neighborhood nuisance, boss and work pressure, feeling of heart while having a baby, or anything ......simply just forget every pain or pleasure in this world.

The answer is big "NO"

The first think in the pain or pleasure we do, is ask for help or thanks to the god for this deed, but to do this we need an image, either in form of man like jesus, bhuddha, braham or in the form of book like bible , geeta, kuran.

so, we the human are so entangled in the web of life, that we need god for our-self. The key point is, in complex and critical situation, we need help of god in form of sculpture or book or a human that leads us to right path. To make this effective and believe in god leads to these books or representatives of human, finally GOD COME INTO THE WORLD.