About 70% of the world's people using computers, or anyone that wants to play PC games, so yeah, literally no one

I do use it for work. Hate it but my employer loves it.

And they'll love it more, once Analytics for Recall gets deployed to their middle managers

probably most people in the world using a computer for work or school...

Terminally HN brained

It's way too crowded these days, nobody comes here anymore.

Serious answer: Almost everyone who owns a PC or laptop. Almost everyone who does work on a computer.