Your purchased CS6 version will continue to work as long as newer hardware and operating systems support it. And that's an uncertainty, because Adobe discontinued selling, supporting, upgrading and updating this version a few years ago. Only severe security issues are being tackled. Even the integrated Camera RAW formats aren't updated anymore...
BTW, you can have both versions (CS6 and CC) alongside each other !
Oorspronkelijk geplaatst op Quora: Why should I purchase Adobe CC instead of keeping my hard copy of Adobe Suite CS6?"