rauschma, 
Our lives would be much simpler if the hair (incl. beards) on our heads had a shorter maximal length.
https://www.washingtonpost.com/news/speaking-of-science/wp/2016/07/19/dear-science-why-does-the-hair-on-my-head-grow-longer-than-the-hair-on-my-body/The only other animal that I know of that eventually gets into trouble if their hair isn’t cut is sheep and some dog breeds.
