Explain why is a large GDP a good thing?

This discussion board is intended to show your understanding of Gross Domestic Product (GDP). In a narrative presentation please first explain what GDP is. Then discuss the difference between real GDP and nominal GDP including which is used by economists to measure economic well-being and why. Explain why is a large GDP a good thing? Give an example of something that would increase GDP but would be considered undesirable and explain. Remember, this is a presentation. You are not answering a list of questions. Please be sure to open with a brief introduction to the topic using professional/academic writing style. Footnote your research.