Now don't go getting all self-important.
And it's incredibly condescending for you to point out how the world works to me: "Just take a look around. How many things do you depend on running 24/7? Your cable TV? Phone service? Ambulances? Medical services (surgeons, vets)? Plumbing? (Your broken shower may wait till Monday, but not the hospital's.) Towing? Or, how about just about every large website in existence? Databases? Ad nauseum."
Well, you got the nauseum part right.
How about this: Not one network you mentioned depends on ONE person to keep going. If you or the Supreme Glenn happen to drive off a bridge on your way to saving the rest of us, I am reasonably convinced that a backup will appear.
You live in a small, residential world. Don't assume you know what the rest of the world is like.