Correct. As
@InfiniteBoredom said, we are all born atheists. We are indoctrinated at a young age. That's why
most Irish people are Catholic, most English are Church of England, most Indians are Hindus or Sikh, most Syrians are Muslim, most Japanese are Shinto. And you know what, if you're a Syrian Christian, you probably had Christian parents. If you're a muslim in Ireland, you probably had Muslim parents. If you're Shinto in the US, you're probably of Japanese descent.
If you live in Central or South America, you're probably Christian, most probably Catholic. Strange isn't it. Those countries colonised by Catholics are now predominantly Catholic. The people of Australia and New Zealand are mostly Christian with Anglican and Catholicism being the two most popular. Imagine that, fill a country with Irish and English people for hundreds of years and the two most popular religions are the ones that are most popular with Irish and English people. The most common religion in South Africa is Christianity. Imagine, Dutch and British settlers colonise a country and suddenly the most popular religions are the religions of those two countries.
It's such a coincidence isn't it.
Obviously there are exceptions. Some native Irish people may have adopted Islam and so on, but the vast, vast majority of religious folk are the same religion as their parents. I teach in a catholic school in Ireland. 95% of the children are catholic. Of the other 5%, guess how many have Catholic parents. Correct. None. Of the Catholic Children, guess how many have Muslim, protestant, Sikh parents or parents of any other religion. Again... You've guessed it. None.
And you know what is even stranger, all of these people in all of these countries truly, truly believe that their god is the real god.
If there was a law that religion was taught as an 'Education of Religion' type subject in schools all over the world, where throughout your childhood you were exposed equally to all religions but not indoctrinated into any one, never told that this one or that one is right or true, I would say that in 100 years time, at least 90% of the world would be atheist.