Why human communicate ?

Well the first three option of why human communicate is because we trying to informing ,persuading and entertaining other people every day around our enviroment........persuade-our objective is trying to persuade people agree of our view point,change their behaviour,we use words,image, sounds to be more persuasive ......entertaining-we trying to makes humor ,striking audio and visual images,leaves others people with an important message or makes them think about something in a new way,great entertainment makes other laugh and think......informing-we trying to to impart information to,and make other people aware of something,we also telling people what we exactly think ......that what i think about why human must communicate......