If you haven’t noticed already, I have something of a thing for everything time synchronization related. “Proper”, exact time is something that I find important, it’s probably OCD related.
As a part of my day job, I manage a quite large network, with hundreds of different devices. And all of these require some method to synchronize their clocks. Anyone who has at some point tried to diagnose a network problem knows how absolutely critical it is to have proper time available at the devices, so that you for example have any chance to compare logs etc.