What's also missing is the client point of view, where a feature gets requested, the developer provides an estimate and then the feature gets changed over and over again by the client during development, yet the client is asking why it takes longer than originally estimated.

A little bit unrelated, but another fun one that happened to a friend recently was the redesign of a website over to wordpress. Once it was done & ready to be deployed the client mentioned that they don't have any servers with php support available - he was the same contact who confirmed and approved all the original specs, heh.