I have emerged from a temperature of 102° with a certain realization. When you get sick the world doesn't stop. Email doesn't get put on hold. Deadlines don't get sick. Granted, I was only down and out for maybe 48 hours -- but it's enough to throw a wrench in the works.
It goes without saying that it sucks to get sick. It happens. This is magnified significantly when you work for yourself, and your company is comprised of one employee. Those that work for businesses that have greater than one employee have the benefit of the company not completely shutting down should they call in sick.
Simply an observation, as well as another learning experience.