The preface of "Robert's Rules of Order" speaks to this:
The object of Rules of Order is to assist an assembly to accomplish in the best possible manner the work for which it was designed. To do this it is necessary to restrain the individual somewhat, as the right of an individual, in any community, to do what he pleases, is incompatible with the interests of the whole. Where there is no law, but every man does what is right in his own eyes, there is the least of real liberty. Experience has shown the importance of definiteness in the law; and in this country, where customs are so slightly established and the published manuals of parliamentary practice so conflicting, no society should attempt to conduct business without having adopted some work upon the subject as the authority in all cases not covered by its own special rules.