It not only gets rid of clunky code holding you back, but often the code written to keep legacy working is a huge attack vector because it's generally not scrut

It not only gets rid of clunky code holding you back, but often the code written to keep legacy working is a huge attack vector because it's generally not scrutinized as much. because well, how many people using it really care if the little chunk of code to make it work in IE6 isn't super solid? Not many... how many 0day hunters care? Many of them.