Its better to know how your network operates that you rely on for your daily life than to know nothing about its internals.
My biggest issue as I age is that I FORGET how to do some of the higher level networking that I used to know innately - and I also lose interest in doing such things and become lazy, complacent, and as I forget things, more and more ignorant to it all...
Take PC Gaming as an example, or server rebuilds.
I could build SUN 650s and many many PC based servers with a blindfold on.
I grew up gaming and ran Intel's Game Development Lab for some time and was super knowledgable about all things PC/PCGaming when I had the lastest and best hardware literally delivered to me every day at intel...
Now I don't knwo shit about 'PCMasterRace' and building these days....
It surprises me how someone who understands the inner workings as well as the interactions of the systems that society has increasingly expected us to depend on are not scared shitless of how things will look a generation from now.
I don't like knowledge evaporation.