That's fine if you're just worried about visual representation. But when you want to provide semantic meaning—for the visually impaired, search engine bots, and

That's fine if you're just worried about visual representation. But when you want to provide semantic meaning—for the visually impaired, search engine bots, and other non-traditional users—you want to convey more meaning than a div or span alone. Of course, there are other ways (such as ARIA attributes) to accomplish this.