The force restarting to update has happened to both myself and my friend before, in the case of not having been given a warning beforehand, or simply not being able to access the "postpone this update" window, which only sometimes comes up for some reason.
How updates are done is very inconsistent, and even then, the fact that it can happen in some cases is an issue in and of itself. However when you consider the demographic of Windows users, that a big chunk of them aren't "power users" like most of you, urging an important security update for what is debateably the most used platform on PCs is important for those who may not understand why these updates can protect them.