I was brought up as a child to worship parents, grandparents and adults etc.
I even worship my teacher who taught me skills.
This tradition is fading away.
I think God idea has help the monkey to become the first human.
Just imagine we try to teach Buddhism to a monkey!
I ask my children to pray to God.
That is the quickest way I can teach them how to respect others.
Hopefully they will understand Buddhism one day.
Based on above ground I don’t think that we need to know who create God.
Answer to this question is depend on the level of individual development.
See my previous post "Not believing in God is not such a good idea"viewtopic.php?f=16&t=15942