Why Learn HTML?

Practical reasons HTML is worth learning well:

• Everything on the web uses it — websites, web apps, online documentation, many desktop and mobile apps (built with web technology), and HTML email.
• It's the foundation for everything else — CSS styles HTML elements and JavaScript manipulates them. Frameworks like React, Vue, and Laravel Blade all produce HTML in the end.
• Accessibility — good HTML is the single biggest factor in whether people using screen readers, keyboards, or voice control can use a site. In many countries accessibility is also a legal requirement.
• Search engines and sharing — search engines and social networks read your HTML to understand, rank, and preview your pages.
• Quick results — you can build a real page in minutes with nothing but a text editor and a browser, and put it online for free.

"It's just HTML"

Many developers learn only enough HTML to get by, then fight problems that good markup would have avoided: forms that don't work on phones, buttons that keyboard users can't reach, pages that search engines misread, and layouts built from dozens of meaningless divs. Knowing HTML properly is a real, visible skill.

Trade-offs worth knowing up front: HTML alone can't make a page look polished (that's CSS) or respond to logic (that's JavaScript), and browsers' tolerance of errors means you need tools — a validator and accessibility checkers — to know your markup is right.