I was in a Swords and Wizardry AP cast and it mystified us that their were people watching live.
I had suggested it might be good to listen to on a security night shift. Turned out I was right about the ones that were live, but I still wonder about the people that watched us after. It was a great campaign to play in, but I don’t know about watching.
I suppose if you aren’t playing pick up games on the internet with strangers it’s another good way to be exposed to different play styles, games or ideas.