Computers have one job: to read and process data. One job, and sometimes they still need help!
Structured data puts you in control, ensuring that search engines and other parsers aren't misreading your information. Get your events recognized as events, your business address as a location, and those product reviews working to attract customers!
Implementing good, structured data is also the first step into the Google Knowledge Graph, the Holy Grail for content marketers. Better yet, with modern standards, it's easier than ever before to get started!