Why doesn't Windows include native PDF reader support?
Dear Microsoft, We’d like you to consider developing a PDF reader for your Windows OS. Something such as Apple’s Preview would be great: “To view a PDF file, just double-click it to open it in Preview.” Mac doesn’t require a third-party application to view PDFs, so why does Windows? Heck, you don’t even need to build it into the OS. Just make it an optional download such as your Save As PDF add-in for Office. ...