Regardless if it’s on business property, in a public area or even in our own backyards, sometimes some trees simply need to be removed root and branch. Sometimes, this can come as a result of the tree being placed in a precarious position, usually under some power lines, where any movement of the branches could result in either a power outage to the area or maybe something worse. Other times it could be because the visible deterioration of the tree has progressed so far that it has become an eyesore to anyone that even walks past it, let alone anyone that has to look at it all day.
Source: http://www.simpleguideto.com.au/simple-guide-to-benefits-of-hiring-tree-care-specialists/