Often it's only for named blocks like functions, and not for the really unhelpful bits like that conditional branch that is long, simple and deep, but really does not deserve spamming a namespace with an unhelpful identifier. And I've yet to see a deliberately short-lived folding to lessen the out of sight, out of mind tax that code folding of associated with. If there was deliberately short-lived folding, perhaps auto-reexpanding whenever the section has scrolled out of view, I'd use folding all the time, to navigate the nesting. The quasi-permanent until explicitly re-expanded cold folding? Yeah, I hardly ever use it, to many bad experiences with forgetting to re-expand.