Number two is why I use it. My site has about 2300 pages and regenerating the whole thing when I tweak one part or another of the basic template or change theme

Number two is why I use it. My site has about 2300 pages and regenerating the whole thing when I tweak one part or another of the basic template or change themes is less than two seconds. Extraordinarily fast and encourages experimentation at least for me. Maybe folks with better front end skills wouldn't care but it's great in my experience