Directors who don't direct!

JUST A SHORT REQUESTWhy do some director's insist on cutting short the directing process? Answer: 1. Arrogance - their trying to rewrite how to Direct.2. Disorganisation.Someone please prove to me how wrong I am - that the majority of director's out there(professional and Community) do subscribe to massive amounts of research and pre-production work, that choosing a good play and cast is paramount. Tell me your views