A lot of times we can't properly assess the risk of something ahead of time. Even when we can, we often take risks that are deemed acceptable. There is risk in, say, getting into a car or an airplane, but the benefits outweigh the risk. On the other hand, people who bought tickets for the 9/11 flights died horrible deaths as the result of making a decision that had no way of knowing would lead to their deaths. The same thing applies to people who bought bad meat and died of E. coli, or people who were on a beach in Thailand at the wrong time and got swept out to sea in the tsunami.

The risk of suicide (in addition to the horrendous pain that it causes to the family of the person committing suicide, pain that really never goes away) is that it will not achieve the desired results (i.e., ending some form of present pain). If there is no God, the suicide may accomplish what he or she wants to by ending existence. However, if there is a God, the suicide could just be inviting more pain, like jumping into a pile of salt to extinguish being on fire.

As for the little children, even in India there are Christian groups. One of my best friends growing up was a Christian whose parents were from India and had converted because they came to the US for medical school and were preached at. The Christian response would be that anything is possible with free will and God's grace, and of course the little children don't need to confess before a certain age regardless of whether they grow up to be heathens or God-fearing Christians.