We use HTML (HyperText Markup Language) primarily because it is the standardized markup language that structures content on the web. HTML provides the framework or skeleton for web pages, organizing text, images, links, and other elements in a way browsers can understand and display consistently across different devices and platforms. It defines the structure and layout of a webpage using tags and elements, making web content accessible, navigable, and visually differentiated. HTML is essential because:

• It creates the basic structure and organization of web pages.
• It is supported by all browsers, ensuring universal accessibility.
• It works alongside CSS and JavaScript to build modern, interactive websites.
• It helps search engines understand page content, improving SEO.
• It is easy to learn and widely used, making it the foundational language for web development.
• With HTML5, advanced features like multimedia support, offline storage, and better forms are included.

In short, HTML is fundamental for building and displaying web content because without it, browsers wouldn't know how to render web pages properly.