Throughout church history, apologetic concerns have greatly influenced church teaching. Taking hold of the Christian faith is not an irrational leap in the dark. Rather, it can be a series of reasoned steps into the light resulting in an intelligent commitment based on adequate evidence and critical investigation. The Christian has the duty to present the Gospel and the evidence for the Christian Faith to others in an intelligent way. Committed Christians themselves have honest questions about various aspects of the Christian faith.
Honest questions deserve honest answers.
Apologetics can often provide these answers and help stabilise the believer's faith.