Linux Ubuntu 11.06- Simple and clean user-friendly interface
- Runs alongside Windows 7
- Less virus contractive compared to Windows
- Nice App Store-esque feature
- Fast - probably because I don't have as much useless crap on it compared to my W7
- Free to download and use alongside Windows
I had a couple more reasons written down on my post, but my Safari app crashed and I'll be damned if I can remember them. The only reason I stray away from Linux sometimes is because of the lack of compatibility with some essential programs I use daily. I don't really have any problems with Windows, I just find I prefer Linux more. Ubuntu 11.06 is a great system - you can download it right off the site and use it for free, without having to delete Windows. I would recommend it to anyone that still hasn't used Linux.
(Also, sorry if I sound like a salesman.)