Stuey-San: I'm guessing that you're on the younger side (forgive me if I'm wrong) but you will most likely discover as you age that "life gets in the way" as I like to say. Illnesses, death of parents, business/job requirements, kids, etc... can all take priority at times. It sucks, but it is life. That doesn't mean that someone does not want to train, they just really cannot. Now, I'm not saying they should be able to walk back in and grade for their next rank, just that they can come in at their current rank and prove themselves ready to the sensei before they are asked to grade up. I assume most dojos are like ours and you must have a certain amount of time (without lengthy interruption) and a minimum number of classes before they can grade anyway, so it's really a moot point, as I see it