Should I rebuild my old website or patch it? — answered by Engineer Saeed Baatiah
Rebuild if two of these hold: the platform no longer receives security updates, every small change breaks something else, or the site fails mobile performance testing and cannot be fixed without restructuring. Patch if the structure is sound and the problem is only appearance or content. The decisive test: if expected patching cost exceeds 60 percent of a new build, the new build is cheaper and buys you additional years.