People, including atheists, write detailed answers to questions for various reasons:
Clarity and Accuracy: Some questions may require detailed explanations to ensure accuracy and provide a comprehensive understanding of the topic.
Sharing Knowledge: Users may have a genuine desire to share their knowledge and expertise on a subject to help others learn and understand better.
Encouraging Critical Thinking: In many cases, detailed responses aim to present well-reasoned arguments or explanations, encouraging critical thinking and discussion.
Personal Interest: Some users simply enjoy discussing and elaborating on topics they find interesting or meaningful.
Regarding your mention of Christians, yes, there are likely Christians using this app, just as there may be individuals from various religious and non-religious backgrounds. It's essential to remember that people have diverse beliefs, and open discussions can lead to mutual understanding and respect.
If you prefer shorter answers or have specific preferences for the type of response you'd like, you can always mention that in your questions, and responders will likely adjust their answers accordingly.