"Bless you." Is that so hard?!?

What is it with people not saying "bless you" anymore when those around them sneeze? Has everyone decided upon Jason Fox's philosophy that we shouldn't bless people throwing around germs and secretly curse me in their heads every time I can't hold the sniffles in anymore? It's not like I'm sneezing all over the back of your neck! It's just common courtesy, people!

(Man, I wish I had a link to that Foxtrot comic.)