Instead of finding a happy medium that would ensure its survival, mankind lives with extremes, which will most probably lead to its end in many areas.
One example? Its phobia about germs! We live in a more and more sterilized world, where we must have control of everything and everyone, we are filled up with advertisements on products that eradicate 99,99% of germs and overuse antibiotics at the first signs of sneezing.
But just like any sport activity, lying down on the sofa will never make us cross the finish line first, do we really think that by avoiding any contact with germs and living in a bubble our body will be much more resistant? It is all about balance.