I tried, really, but...
...I won't switch to Seven. I'll keep my current OS.
7 is faster and lighter than Vista. It's less intrusive and much smarter.
7 is more up to date than XP, supporting AHCI and more devices right off the CD/DVD, while also using advanced prefetching and DirectX 10.
7 can run on netbooks.
But, I'm sorry, the 3 apps limit for Seven Starter Edition is a cruel joke, and adding 40 bucks on top of a (otherwise naked) $250 machine so as to make the OS work 'right' is asking too much. Even worse, if I want to have the eye candy, it's not $40, it's $70 I'll have to fork over! And that still doesn't allow me to set up ACLs and do without UAC without compromising security: I'll have to get the Platinum edition for that, probably a whopping $200 extra! For a $250 machine (which already has an OS) to be usable at a price of $450 is a bit much.
For $250, I'd rather keep my (or buy a new) netbook. I can run a mail client, a web browser, watch streaming TV, update my iPod (yes, there is reverse engineered iPod support in Linux), and chat, on a 3D compositing desktop with all the eye candy I may want (or want to remove), while at the same time feeling safe that the data stored in the 'work' account running in the background can't be reached if the current session is compromized.
I used to not have a choice: I used to have to buy a machine with Windows installed (not exactly true: at one time, I could choose between MS-DOS and PC-DOS), then format it and install the OS I wanted on it.
Now I can buy one ready to use. Why would I want to pay more for no more?