I’m an older dude whose phase of staying up all night playing was back in the early console days. I prefer in-person tabletop RPGs like D&D, Traveller and Call of Cthulhu. Just not into computer games anymore, but that and social media seem to be most people’s primary computer activities.
Game chatter has changed over the years - I used to see a lot of talk about graphics quality and massively powerful hardware - maybe that was during a period when it was rapidly improving, I dunno. But the current focus seems to be more on game industry business decisions sucking.
Anyway I’m just wondering how common it is to use computers more for coding and other technical non-game stuff.
Maybe “arranging” or “composing”.
As for tools to make it happen: You can use a “DAW” (Digital Audio Workstation) which is how most people compose these days. I use Reaper because it’s a tiny download, very full featured, and cheap. Ableton is very popular and has the biggest community online. Cakewalk is completely free (with a sign up.) ProTools is what a lot of professionals use, though it’s dying a slow death because it’s very expensive, they’ve gone full subscription model, and the things it can do that drew people to it can be done just as well with other DAWs that aren’t so predatory.
A DAW won’t do the work for you, though. If you want something to make harmonies or drum beats for your melody for you, there are a lot of "plugin"s or "VST"s you can download that can help with that process. Or, if you just want to give something a melody and tell it to make a song, there are probably AI solutions these days.
Good luck! Beware the audio rabbit hole. This can be a cheap, or ridiculously expensive hobby.