Did you buy your previous MBPs because they are nice kit, or because of Mac OS X? Are you switching to a Dell, or switching to Windows or Linux? If your work

Did you buy your previous MBPs because they are nice kit, or because of Mac OS X? Are you switching to a Dell, or switching to Windows or Linux? If your work or personal use can so freely change Operating Systems, then, I guess I consider you lucky. I can't really do my job from a Windows box without significant pain. I could probably use Linux, but it would add some additional frustration.