It still baffles me why the debates about the true origins of people's beliefs are still ongoing when the answer is bare. Some may deny and say they truly became Christians, Muslims or maybe Hindus through faith and grace , but it is an undeniable fact that the home an individual is born into greatly(by a very huge percentage) affects an individual's beliefs. Why do I say so? Think of about 3 or even 2 Muslims with Christian parents or 2 Christians with Muslim parents that you know. It might be possible to achieve the latter because Christians are highly persuasive in evangelism but when you consider the less mature(ages 17 or less), you'll realise the difficulty of this task. Right from birth, children are fed beliefs from their parents up to a point that they believe the beliefs are true even if they are silly, and the human brain is such a way that when something is fed into it continuously for a long time, it sticks-and any effort to persuade otherwise may prove futile even at maturity. This is one of the many realities of religion: it is taught.