Chat rooms are used for many reasons from business to entertainment all over the world and have been for many years. The software and ways in which people use to communicate have evolved substantially as demand has increased and the general climate of what we use them for and how has also changed.
There are many reasons to use online chat rooms, they've been used since the late 80's for social, professional and entertainment purposes. With the worlds current health climate it makes sense with a lot of people working from home to use chat applications and programs to help employees connect with each other. While we're all stuck at home, don't forget that chat rooms are a great way to communicate with others in a safe environment.
Chat rooms have been a popular way to use the internet to communicate with other people for decades. For a long time they were the primary online social outlet before services like MySpace, Facebook and other popular social media services replaced them. They have not only been used socially, many businesses have employed the use of chat rooms long before Slack and Zoom were around. Many of the popular apps and social websites we use today still use chat rooms especially dating services.