I could tell you in my own words why people use Twitter but Paul Gil writing on Lifewire.com does a great job of succinctly answering this question. He writes, “People send tweets for all sorts of reasons: vanity, attention, shameless self-promotion of their web pages, boredom. The great majority of tweeters do this microblogging as a recreational thing, a chance to shout out to the world and revel in how many people choose to read your stuff.
But there is a growing number of Twitter users who send out some really useful content. And that's the real value of Twitter: it provides a stream of quick updates from friends, family, scholars, news journalists, and experts. It empowers people to become amateur journalists of life, describing and sharing something that they found interesting about their day.”