You should read this famous post by Joel Spolsky: https://www.joelonsoftware.com/2000/04/06/things-you-should-never-do-part-i/ https://www.joelonsoftware.com/20

You should read this famous post by Joel Spolsky: https://www.joelonsoftware.com/2000/04/06/things-you-should-never-do-part-i/ https://www.joelonsoftware.com/2000/04/06/things-you-should-... I'm sure there's some counterexamples, where a rewrite was the right thing to do. But be wary.