You know, I've always read that COBOL projects still get maintained to this day because the costs of rewriting these projects just are too high. I wonder if there's a cutoff point where maintaining them starts costing more than the rewrite. I just don't see how organizations can justify maintaining these projects without these kind of changes forever.

Now that's some job security

Inheritance: The good, the bad and the ugly - aka extends, "here is the code, my child" and prototype

After all, mum makes the best spaghetti.