Agree @develcuy
Drupal is not alone. gcc, Bash, emacs etc are even older than drupal and are still holding up. I would prefer to go Python's route though (as opposed to even Linux's). Why I said Python instead of Drupal is because of the recent CVEs against Drupal which was lurking there for so many years. But in general, we are saying the same thing :-)
RE: HF20 Update: Restoring Continuity