If you want to your product listings to be optimized, the Q&A section is a must thing you cannot skip. Research has shown that product listings with at least 5 Questions and answers have a significantly higher conversion rate comparing to product listings without questions and answers.
Answers to the questions can help to clarify main issues for the product.
It shows that shoppers are interested in this product.
It helps to fill the listing with information. This is very important for just released listing without many reviews.
It shows the quality of customer service for listing visitors.