Switched to Mac in 2004 because I wanted a small but powerful laptop for uni work, so I went with a 12" PowerBook.
Now I buy them because it's cheaper than buying a powerful PC and powerful Mac, as I need software on both systems, so I buy a high-end iMac every so often.
I'm not opposed to switching back fully to Windows. If Apple does go the way of "iOS on desktop" then I'll be back on Windows in a heartbeat. I just like Apple hardware and their build quality.
You may want to look at Windows 8 before you say that....
We actually as of yesterday were told to halt any work on in house apps compatibility with Windows 8. Its so bad our company who constantly upgrades everything for whatever reason will not be upgrading to 8 (and we upgraded to Vista before!).