On the Windows Phone users voice site, a post was put up asking Microsoft to keep the back button on the OS. The post was put up by Dev Jaykrishnan, who suggested that Microsoft make it an option to disable the back button feature, which certainly sounds reasonable. So far, 318 votes to keep the button were made in response to the original post.
More interesting are some of the actual comments. Some complain that using the back button accidentally takes them out of an app and to the home screen instead of going back one page. If the back button is removed, the gang in Redmond will need to add a back button on the screen or rely on developers to update their apps.
If you're a Windows Phone user, how would the loss of the back button affect you?
source: WindowsPhone via WMPoweruser