The origins of all training, such as Schutzhund or IPO, are based in Germany. These training tests were developed as a primary method of producing top level German Shepherd Dogs. They were geared to identify suitability of individual dogs for work in several formats
For the health and wellbeing of your dog, training should really not ever be considered an option when owning a dog. Well trained dogs are more likely to be behaved and listen, be void of behavioral issues, be good in public, and are less likely to bite. Owners also have a much closer connection with the dog when the time is taken to form a relationship through training.
If you’re not directly familiar with clicker training, you might be a little confused on what exactly this style of training is all about. It is a newer style (although has been known and used for many decades) of training in the sense that it took a while for dog trainers to really hook onto it.