The key question of our lives is the question of the existence of God (or gods, in the case of polytheism). This question can be framed more generally: Are we merely complex, self-operating mechanisms created by random forces, atoms and molecules that are entirely indifferent to human beings?
A wide range of evidence supporting the God hypothesis. It can be grouped into philosophical arguments (such as the moral argument), scientific arguments (including the cosmological and fine-tuning arguments), the concept of irreducible complexity, religious arguments, and near-death experience accounts. Some may find these arguments convincing, while others might prefer more concrete, empirical evidence.