Yes, I have been daily driving Mac OS 9, as have many others here. The best two words to describe doing it is "think different".
You'll obviously have to change habits, as you won't be able to keep your "modern computing consumer life-style". This might seem shocking at first, but if you've dwelt long enough on earth you may remember a time we could do well without it. And fun times they were.
I can't tell as to why others pick Mac OS 9 and I sure hope they'll speak up for themselves, but for me - apart from some nostalgia for Mac OS - it wasn't a decision to make modern life impossible. It's not about escaping from modern times - it foremost really is about wasting less time.
We've talked about this on System 7 Today before but to me, "time" has become the most valuable commodity. More valuable than money. If people keep watching after their stock portfolio, why not watch your time portfolio?
And I want my imagination back. I used to be a kid that loved day-dreaming. And a creative one too. But creativity, as I have learned, needs silence and it needs procrastination. You can't force it. And I don't get it while I'm distracted consuming a video in my Facebook news stream. The best ideas come to me when I'm in bed before sleep, showering or commuting on the train / bus watching outside the window. From what I understand it's probably the same with most of you too.
I feel that ever since I started consuming less online, I've gained back some of my creativity & drive. I've since started and worked on web projects like Cornica, Bolkonskij's Cheat Emporium, re-invigorated System 7 Today and helping Knezzen here on Mac OS 9 Lives. I couldn't have done this if I was still hanging out for hours on my newsstream in Facebook. Because I know I would - I'm susceptible to Facebook's never-ending stream of news.
So as a result of that, by using Mac OS, my internet has become rather small and catering to my personal interests. "Fine-Tuned" if you'd like to say so. It's a small universe for me to check daily now:
System 7 Today, Macintosh Garden (recent changes), OS9 Lives and two bookmarked gopher pages - and then I'm done. That's my basic daily routine. Well, add my e-mail in Classilla. Usually done in under 10 minutes. 10 minutes! (yes, there are days when I go "exploring" but above really is the daily core routine)
You wanna know how much time I used to spend daily on Facebook, YouTube and others before? Hours flew by arguing with strangers about politics, following links to news outlets and watching video after video. By the time I shut down the Mac it was dinner time, I had done nothing but just to consume.
So while that might sound odd at first, I feel that I gained much by limiting myself to my old Macintosh. Yes, it does limit my options and that's good. Lots of people don't get it. I couldn't either until I tried it out and started to understand. I wonder what others on here have to say about this and whether they experience the same.
Right now I'm limiting my YouTube access times. (I have a smartphone next to my G4 Mini). But YouTube is sucking out the creativity of ordinary people. Yeah, I can hear you guys protesting already :-) ... "wait Bolko, but among the trash there's all these cool life hacks and how-to tutorials!".
Well, granted, there IS some really useful stuff. Showing you this or that much better than any textbook could and making for a real learning experience. But it also gives you very often the faux feeling of learning something helpful when in reality all you do is just staring onto a screen for hours. How are you ever possibly going to fix your leaking bathroom faucet with a wire and a rubber band? You probably won't - 99,9% will just exchange it for a new. And then there's this related video that you click, and that has an interesting related video, and then ... the way YouTube perfected the hacking of my visual space is almost frightening. (anyone remember SimSense addiction from Shadowrun?)
Back when we had only televisions, you'd switch through the channels if an interesting program ended. But eventually nothing of interest would be shown anymore. So you'd switch off the TV and go on doing other things. That doesn't happen anymore thanks to YouTube's algo.
So why Mac OS? Again and in short, three reasons: bringing back imagination into my life. Sharpening my senses. Getting more time. I suddenly find the time to do more things with my three children, to read books again (remember those paper sheets glued together), play some classic games that help me unwind after a stressful day and do things around the house that I should have been doing weeks ago. Or simply just have more social interactions with the people around me - be it a simple chat with the neighbours or inviting interesting people over for a coffee / tea. It is all connected.
Sorry, this got a little longer as expected ... but I hope it gives you a good idea as to why some people still use Mac OS 9 in this day and age.