copyright windows

This is how to backup, restore Windows 7/8 / 8.1 and Windows Vista licenses
with each release of windows, microsoft offers some changes to licensing and activation techniques to prevent copyright infringement. so how to back up your windows license. please refer to the following article of network administrator.
Why use copyrighted Windows?
if you just think simply, win pirated saves you a cost you think is right but not enough. so what are the consequences of using pirated win? why should we use copyrighted windows? is windows license better than windows without copyright?