Some of the nostalgic things about the "old web" have modern incantations, if you look for them. For instance, the awesome spinning "construction" icons have been replaced by "Beta" tags.
I've use Opera recently on my Mac and find it nowhere close to Safari or Firefox in terms of elegance and feature set. Gestures won't work via the trackpad and Google Docs won't load. Clunky.
I use it on a PC. I can't speak for the Mac but it works beautifully on a my WinXP box.
Plus I am heavily keyboard driven, and Opera is the only browser I know that can be used without the mouse (at all!). Navigating links is especially cool!
I use it on my mbp. I agree the feature set is inferior, but its the only browser that can handle the 50+ tabs i like to have open at once. ff3 eats up cpu and overheats things.
I was use it when I'm away from the laptop charger. All other browsers drain it out in less than an hour. With Opera I can squeeze a good 4 hours out of it. (I also use a lightweight win32 editor called editeur that does syntax highlighting instead of emacs for all my "write first, see it run later" type code.)
I use it on Linux, Windows, and my Blackberry, actually. I simply love it, though there are the occasional rough spots - like Google Docs or Gmail not loading. Thankfully, I don't make extensive use of them anyhow, so I'm solid.
http://web.archive.org/web/19980110221024/http://operasoftwa... (via the Wayback Machine)
Edit: Hacker News in Opera 3.0: http://imgur.com/FPYc.png