Why can't they always be little darlings?

This would be totally false advertising. They look nothing like this right now. Their faces are instead contorted, red, sweaty, booger covered, and dare I say crusty? For the last week they've been totally unreasonable, whiny, bad tempered, and unintelligible for about 17 hours a day, and they REFUSE to nap.

Cough syrup, cold and flu medicine have absolutely no effect on them. I want to know what makes them sleep? If they could just sleep oh about 17 hours a day while ill, life, my life, would be a walk in the park.