Which is exactly why they are A waste of time. I have yet to meet a developer that doesn't have an idea for a notes/calendar/organizational tool. The point is that organization is such an individual problem that it always needs a custom solution and yet each solution will only be valuable to a handful of people.

Lol THOSE are actually useful / interesting / hard problems worthwhile solving - or at least working through.

We need more computational biologists solving protein folding problems or the like to cure humanity’s greatest ills. NOT a todo app with a new sticker on it.