[romaniv]

If everyone followed this advise, most of my professional life today would consist of tweaking hundreds of bandaids for PostNuke modules and Classic ASP pages done in Visual Basic.

Technologies change. More importantly, requirements and visions change as well. Blindly throwing money at an existing system without considering alternatives is a really, really bad idea. And while you can argue that it's possible to refactor anything into anything else, you can't argue that it will always be cost-effective.