Man does not live by Science alone nor would Religion or most other areas of life exist unless people had thought them out. People band together with others they agree with to promote what they see as the thinking thing to do. Such movements are also philosophy. Feminism is a philosophy as well as Racism, Nudism as well as Pro-Choice. They are the considered thinking positions of groups of people on some particular matter.
People have their own personal philosophies.
Whether one joins a group or keeps it to themselves, people have convictions on such things as how to coach basketball or what is the meaning of life. Capitalism, and Animal Rights, Fitness and Secular Humanism are philosophies because they are what people have decided is the true and best answer to a specific issue. Philosophy, then, whether that of professionals or of groups, or of any one person in particular refers to their thinking on p73 something. Philosophy is another word for thinking. The capacity to think is a power we humans possess.