I suppose we'll have to wait and see regarding security. It's a little premature to say that the metro side of W8 will be a security problem. I suppose the push notification system stands out as a possible vulnerability, but it all depends how well MS have coded it. In my experience just about every version of windows has been more secure than the last (only stands to reason that it is), but nothing is 100%. Weren't people up in arms about MS forcing the ribbon interface on them in Office a few years ago? I think most have accepted that after a short learning period it's a better interface for office tasks (most of the time at least), and it also makes sense in the explorer (I still question it's usefulness in a more complex program like Autodesk AutoCAD though). Change it seems is just difficult for some to overcome. I do think your criticisms are valid to some degree. But the only thing MS is forcing upon you is the start screen, and as I've tried to point out above it's not really a huge amount different. This isn't a complete overhaul, the desktop experience is as it was (with a few improvements, and the start screen).That isn't exactly forcing a user to re-learn the way they use their pc.