Hey, since we've totally botched the thread here, let's finish the job.
I think that most operating systems of today suck. Windows is based on a flawed paradigm, with their monolithic core and registry-based operation. Not to mention a GUI team that doesn't know where to go. One version here, next version there, most things are being designed based on "usage statistics" and shit like that. Then you have Linux, which is essentially a relic from 40 years ago. Unix was once the word, but not today and definitely not for desktop PCs. They're trying to update it, twist it and renovate it, but it still is that old crooked thing that still lacks essential technologies (look at Weyland) and other aspects of it are either outdated, or totally focused on server performance and not desktop PCs, or both. And finally, if you're not a Linux guru or willing to read a lot, just to achieve simple tasks, configuring Linux is bad. Mac OS X is a lot better in that department, it's relatively modern, its Mach-derived kernel is considered to be state of the art, the GUI is concise and pristine, but... it lacks a lot of the (whatever) openness of Windows. Apple is rather oppressive. It's usually "our way or the highway", and whilst I like the attitude, especially when it's about useless legacy compatibility and/or stupid things (read Adobe Flash) that make the computers slow and unprotected, the same attitude extends also to new or nice things. And of course, you'll have to spend money on their hardware, unless you want to spend your days tinkering with the innards, in which case you're worse off than with Linux.
So... which OS? No idea, all of them have fatal flaws. I guess that's why we keep using Windows. It's not great, but at least it's the one everyone else is using. Bleh...
Anybody care to start a new OS with me?