Why do people still hunt for CS6 today?
The Internet Archive acts as a digital library, hosting millions of files including legacy software. When searching for Illustrator CS6 there, you will often find ISO images or "retail" installers uploaded by the community. adobe illustrator cs6 archive.org
Archive.org is a non-profit digital library, but it does not have a universal license to distribute copyrighted software for free use. Creative Suite 6 system requirements - Adobe Help Center Accessing Adobe Illustrator CS6 through Archive