Do you have a group of trees in your garden that block the sun, obstruct your view, or fill the garden with mountains of leaves every autumn? Perhaps you have one or more trees that are simply so over-grown that they have become unstable/unsafe. If so, you may well have considered getting rid of them, but how would you go about it? You may feel capable of doing the work yourself, sawing a lumberjack-style wedge out of the bottom of the tree trunk, and watching it fall to the ground while you resist the temptation to yell “Timber!”
While you may very well be capable of all of that (and it would surely be a lot of fun!), there are a number of safety – not to mention, legal – considerations that simply cannot be ignored.