germs

why is it that if you keep your house fairly clean and wash your hands after you go to the toilet you're more likely to get sick than people who never have? i swear i have the weakest gastric system ever. i just can't take the germs when i eat at a greasy spoon or a kebab shop (not that i've done that since i learned my lesson last term). seems that kids who grow up eating bugs and sneaking handfuls of dog food either die really young or grow up to have kevlar stomachs. i don't have any food allergies or diseases, so i think this must count as some sort of disability handling the strains of everyday life. or maybe just red meat.