Using sections in website design allows you to organize and structure your content in a clear and meaningful way. It helps create a visual hierarchy, making it easier for users to navigate and understand the information being presented. Sectioning also makes it easier for web developers to apply different styles and backgrounds to separate parts of a page, further enhancing the user experience. Additionally, having well-defined sections can improve the accessibility of a website for users with disabilities, as screen reader software can announce the start of each section to users.