When people are born into a religion, it becomes much easier to convince them that the religion is true rather than convincing an adult. Then they live their entire lives with a mentality based off of that belief and (no offense) will often ignore evidence for alternate theories in order to secure that belief until death.
Indoctrination at a young age is the most effective way for religious people to continue to have a stranglehold on the world, but it won't last forever. Recently religion has been on the decline and non belief is on the rise, such as in America.
The problem with this method is that children rebel, and that rebellion opens a door for them to either convert to another religion, or refuse to believe anything. That isn't a bad thing either.
In a lot of ways religion has been slowing advancements in the world (stem cell research, acceptance of gay marriage, abortion rights) and this change could inspire more critical thinkers.
To any religious people: Don't let your religion think for you. Don't be a mindless zombie to your belief, a sheep to be herded. If you are not willing to think for yourself, someone WILL take advantage of that mindset (they probably already have.) Don't act like it is of the devil to doubt and question your beliefs either, because you are closing doors in your life that could lead to so much more, and better opportunities.
Throughout the world, the overwhelming majority of people who believe in, or otherwise feel emotionally linked to, a particular religion are those who have been born into it. For almost all people, their religious faith is something they inherit from their immediate families. From infancy itself, they are carefully socialized by their parents and other close relatives into accepting the religious doctrines, beliefs and rituals of their families. At this stage in their lives, children are most susceptible to the influence of their parents. Unable to think for themselves about matters such as religion, they naturally accept whatever is taught to them by their parents, whom they implicitly trust. Being wholly dependent—psychologically, emotionally and materially—on their parents, they automatically imbibe the religious beliefs and prejudices of the latter. This is how blind, unquestioning belief in the religion that they inherit at birth becomes so deeply-rooted in most people as to make it almost impossible for to shake off at a later stage in life. Along with this, in many cases children are also socialized by their parents into believing that their religion alone is true and that all others are false, impure or deviant. Naturally, all these religious prejudices—about the supposed superiority of their own religion and the putative falsity of all other religions—that they inherit at this impressionable age remain with many people deep into adulthood and last till they die.
The fact of the matter, then, is that what almost all ‘believers’ —irrespective of religion—passionately regard as ultimate religious truth is simply the collection of religious beliefs, rituals and prejudices that they unthinkingly inherit from their parents, and which, through very effective indoctrination, they are trained into blindly believing as Absolute Truth.
Every religion is susceptible to multiple interpretations, and this explains the existence of fierce sectarian divisions within each of them. Each sect within a larger religious tradition claims to monopolise religious truth in quite the same way as most religious traditions themselves do. Here, too, membership in a particular religious sect is almost always based on one’s birth in it and consequent socialization into its doctrines from a young age. Almost inevitably, a person is a Sunni or a Shia Muslim, and, then, a Deobandi Sunni or a Barelvi Sunni or an Ithna Ashari Shia or an Ismaili Shia, not on the basis of conscious, informed choice made in adulthood, when alone such a choice can be made, or as a result of a careful comparative study of the competing doctrines of these rival Islamic sects, but simply because he or she was born into a particular sect whose beliefs he or she is then socialized into believing represents the ‘true Islam’—which, in his or her mind, is equated with Absolute Truth. The same principle holds in the case of sectarian divisions in other religious communities, too.
That is why today's Christians born as Christian are living and dying as Christians.
That is why today's Muslims born as Muslims are living and dying as Muslims.
That is why today's Hindus born as Hindus are living and dying as Hindus.
That is why we see majority of Christians in Europe and Latin America.
That is why we see majority of Muslims in Middle East.
That is why we see majority of Hindus in India.
That is why we DON'T see majority of Hindus or Christians in Middle East.
That is why we see majority of Muslims in Europe and Latin America.
Do atheist believe there faith is true just because they were brought up in it? If so than the only reason you believe it is because you are brainwashed. If not than you've proven the opinion at hand absolutely false. The idea the questioner is asking is illogical beyond reason.