Make no mistake about it. Being too quick to rewrite a system is bad. It causes unnecessary work for others and can throw a schedule behind drastically. That

Make no mistake about it. Being too quick to rewrite a system is bad. It causes unnecessary work for others and can throw a schedule behind drastically. That said, I think it's important not to go to the opposite extreme. Personally, I'm in the camp of being too quick to rewrite things myself. And though I've learned to control my gut instinct in this regard, I've also learned that sometimes it's right. I can name several instances where everyone would have come out better just by rewriting the damn thing up front rather than trying to fix or maintain the old system. TL;DR - Sometimes discarding your peers' work is the best way to respect them.