I live stream on my YouTube channel because it's an easy place to stream to and keep the video around for posterity without any extra effort. I stream whatever I'm working on (right now that's content and projects for EpicWeb.dev).
With the exception of Office Hours, my live streams aren't typically very interactive. I do talk though my thought process so they're entertaining to observe and when I get stuck or during breaks I often will check back on the chat. But the point is for me to be productive, not to answer questions (that's what Office Hours is for!).
📅 I often stream without scheduling it, but I do have my live stream schedule and you can subscribe to the Google Calendar where I schedule it.