Software has the power of easing our daily life by bringing us a lot of comfort and good times.
Software is an essential part for the computer to do that job.
Software licensing is the part that pays for the programmer work. Every time you purchase a license for the software you want to use you receive a registration code which the software uses to validate you as a rightful license owner.
Along the way you will acquire many software titles in the form of utilities, games and tools. Most of them will require some form of licensing.
At some point you may need to reinstall some program(s) and chances are that you may also need to reinstall the whole Windows.