The thing is, you can have a great defense, it's still going to give up points, and sometimes at a time when you don't want them to.
With the oversimplified thinking that the best defense is a good offense, part of the reason the defense has been good is because our offense has reliably moved the ball and converted scoring chances this season. That gives them a breather, and breathing room. We want to keep scoring so the defense can play free and easy.
We're going to have some games like Purdue where teams move the ball on us and score. It's alright. We just need our offense to be a little more successful.
We have all the ingredients.