<<Aspect and mentality are depend on Environment of brought up.>>
That is very much true. Human psychology is naturally directed towards self-importance and self-determination, but that is largely an ilusion. We are strongly shaped by the circunstances we live through.
<<I think We should teach to our children that religion is the history and culture of any nation.>>
That is very much true for some nations (Japan, India, Nepal, Iran, even Israel) but really, not so much for most. For good or worse, national beliefs are nearly forgotten and in decline. I happen to find that a good thing - I'm somewhat alergic to nationalisms.
<<It is not only the worshiping of God-Mrinal>>
Actually, God is a minor concept even in religions that make a point of claiming to have him at its center. It is also a fascinating concept, because its strength relies on its ultimate ambiguity. Which is why I am an Atheist