Windows 8 Metro UI - Whats all the fuss

I keep reading all this hate about the metro interface in Windows 8. Everyone is complaining that they want the old start menu and that the Metro user interface is so bad... I've been using Windows 8 for months on a non touch screen laptop and it works beautifully! There is nothing that I cant do with a keyboard and a mouse that is exclusive to touch. Why all the complaining about the start screen/menu... Don't really see why anyone needs the old start screen when the start page works so much better.I'd like to hear from those who are having a hard time in Windows 8 non touch devices; What issues are you having and what can't you get accomplished with a keyboard and mouse.Thanks