I'm on Mac now since 2002 and I will never ever change back to Windows again!
Each and every time I get asked by friends about some "computer issue" it is a Windows PC, never a Mac.
Mac aren't perfect and have issues as well, but it is with all technology items, if you don't treat it right, or simply said, if you are too stupid to use it properly, than stay away from it.
The only reason, why I do have a BootCamp partition with Windows 7 on it (and I admit, Windows 7 is probably the first Windows version, which seems to do, what it is supposed to do), is because I play Modern Warfare 2 on it. Once I'm through with this game, I will remove the partition and Windows installation again, to free up the diskspace.
And yes, I also know a few (maybe two or three people) who returned to the dark side again, but mainly, because they thought Windows PCs are cheaper, or because they require to work with some non-Mac software. All others, who I know, converted to Mac, are very happy with it and even don't consider returning to Windows.
From time to time even I need to use Windows, when somebody really fu'ed his iPhone.... Funny enough, that you only can restore a hard bricked iPhone on a Windows PC......
Windows or Mac is some sort of religeous discussion. There is no "good" or "bad". It is a decision, what you like more.