Bone to be wild!
Couple of questions, why is that a bad thing? How long is too long?
What I've read is that by repeating the same workout and allowing it to get to the stage where it's easy you actually give your whole body (Joints, muscles, bones, etc) a chance to rest and solidify the progress you've made. Then, when you move up to something harder you will be in a much better position. It may not be as fast but it is better for the long term. I'm not entirely sure either way but I don't think it's quite as simple as you're making it out to be.