Ever wonder why we need to be sick? Perhaps it makes us more appreciative of the times when we are not sick but maybe there is a little bit more to it. Maybe the reasons vary but there might be a good reason why various strains of viruses and bacteria are allowed to enter our bodies. As scavengers viri and bacteria have the job of recycling cellular tissue and debris so that our eco-system can continue to cycle. But, perhaps the purpose of these refuse eaters is more elaborate than we first supposed and more intricate than just causing a-asprin-itis!
The article link below is a more detailed and well thought out article to give more definition and incite to the mysteries of why we get sick.