Why proper grammar is best

Is proper grammar really that important? Well in order to answer that question, we must first define what proper grammar is. One definition states proper grammar or 'prescribed' grammar as it's also called is: a set of "rules" governing the use of a language; basically it tells the speaker what to say and how to say it. It can also be called "standard English." But to answer the question, yes proper grammar is important because it gives speakers and writers the ability to communicate clearly and appear more intelligent.