Why do people broadcast a video?

It is interesting and contributes to the creation of a kind of social network where you can communicate with friends and other people, as enthusiastic about video games and creativity. Many broadcasters earn their living by showing what is interesting to the public on Twitch.
Why do people watch Twitch?

People like to watch the gaming of video games or just charismatic players, especially if they have interests in common.
The Twitch platform is a real opportunity to find something new. It is proven that with its help you can persuade people to buy video games.
Twitch is not just an opportunity to watch video games. This is a social network that works in real time with sound and chats, allowing broadcasters and their audience to communicate on any topic: from games and pop culture to life in general.

What do people look at?

Games: Twitch has all the games of all genres!
A user-generated program: authoring material from community members - from ordinary games with friends to unique subcultures such as speedrunners, or even Twitch Plays games with a chat-based game process.
Esports: video game competitions have their own growing ecosystem with many shows and events. On Twitch there are all the leading teams, leagues, players, talk shows and events.
Publishers / Developers: all major publishers and game developers have channels on Twitch.
Media: all major video game sites have channels on Twitch, thanks to which they can provide readers with the latest news.
Events: people around the world use Twitch for shows, press conferences and other events.
Twitch Creative: This is a section in which creative people can show the audience the stages of their creative process, whether it's writing a picture, composing a song or cooking a dish. The rules for using the channel "Creative" are listed here. https://help.twitch.tv/customer/portal/articles/2176641-creative-faq