I, too, bought a $2,000 gaming setup just to browse the internet on it.
To be fair, my gaming laptops would shit themselves constantly, so this bad boy has been running for a good amount of time and it doesn't look like it's going to shit itself any time soon.
On a sincere note, I sometimes play games, but it's normally with others and not by myself (so it's a socialization activity). I watch YouTube, listen to audiobooks, read pirated/free books. I code sometimes. I view Discord occasionally. I mainly use my computer for work because I work a remote job. I chat and browse on here.
That's kind of it. I'm trying to think if I do anything else, and not really. I'm on a few other forum sites so I'm on those sites, too, but I mainly browse. This is the only site I chat so much.