Rasul Muhammad said, “No baby is born but upon Fitra (as a Muslim). It is his parents who make him a Jew or a Christian or a Polytheist.” (Sahih Muslim, Book 033, Number 6426)
Baby and children under 4 has pure sincerity, a total surrender to God act. Islam is the way of total surrender to God, as mankind getting adult we also trying hard to survive for living one life. Adult mankind tend to busy survival, among the dangerous situation in human society, and the uncertainty of life option, every second, at every space.
How to survive the uncertain condition, while keep totally surrender to Al Illah, is an art of life, living the Islamic way of life.