Originally Posted by testpie

Not to shit on your house or anything, but i have a theory that says that people today are too clean; in the past, we weren't that clean, but, we developed more of an immunity to common germs because we were around them more often. However, nowadays, people seem to clean their homes fanatically - and as you say, if you are in a sterile environment (i.e. your home) all the time, then your immune system isn't getting the chance to develop, and hence when you actually do venture into the outside world, your immune system becomes what i'd politely term as "shit out of luck".