Kung Fu is about understanding yourself. It is about training every little detail, so that you can completely control your body. Through the physical discipline of your body you begin to understand yourself. This knowledge can be translated into fighting and you can become a great fighter, if that is what you want to do. But you can also translate it into developing control of your mind then developing the growth of your mind, which is actually much more powerful. This is why kung fu is a complete system. It is about understanding yourself through disciplining the body and thereby disciplining your mind.
There is no higher calling than understanding yourself. And this is a calling that everyone must pursue. There are no exceptions to this rule. If you do not rigorously pursue the understanding of yourself then you will be missing out on all the true joys that this life has to offer. There is a caveat: as you understand yourself you will begin to understand other people and you must continue this study of other people. This understanding of human nature will help you to understand yourself even more. This job never ends.
This is life, kung fu is life.
As Great Grandmaster Moy Yat famously said.