HAML is for people who know and use raw HTML, but who would rather not spend time on typing closing tags and all other syntatic sugar and line noise. HAML allows writing pages using leaner and more concise markup, all the while improving its readability.
Although I must admit you've got a point there, it's a bit like Atwood's indentation piece yesterday, why bother fussing over that when your editor can sort it for you?
The point is that HTML is a standard format that many tools and people are familiar with. HAML is not. While HAML might be more succinct, there is a tradeoff being made that is probably not appropriate for all situations.
I can agree with that, I wouldn't use a code-based markup generator simply because I couldn't see how you'd add design-based containers and things in there. Seems to eb good at producing semantic content markup, but not for full pages.
HAML is for people who know and use raw HTML, but who would rather not spend time on typing closing tags and all other syntatic sugar and line noise. HAML allows writing pages using leaner and more concise markup, all the while improving its readability.