How much information can a detailed birth chart provide?

I've seen many people talk about detailed birth chart reports and Kundli analysis. Some reports are quite extensive and claim to cover areas such as career, relationships, finances, family life, planetary influences, and different life phases.

For those who have explored their birth charts in detail, did you find the information useful or insightful? Were there any sections that helped you understand yourself better?

I'm curious to know whether a detailed report provides significantly more value than a basic horoscope reading.