The goal of every question is to increase faith, encourage repentance, lead to greater covenant-keeping, invite the Holy Ghost, and help you endure to the end.
Open-ended questions encourage reflection and discussion. They are far better than closed-ended questions that require a simple answer and little thought.
When questions are applicable to our lives, they help us find personal meaning in the gospel and be "doers of the word, and not hearers only" (James 1:22).
Deep questions lead to a deeper understanding of the gospel and a more sure testimony. Responses to these questions go far beyond the "Sunday school answers"!