I've learned that age has a lot to do with it. For kids, a new shiny belt means a ton but as they age the belt might just become something that goes around their waist, regardless what color it is or what color they're next one could be. As much as I hate electrical tape on belts, it's a pretty good compromise for kids as long as you don't over do it. I'm talking about a stripe once they learn half of the required material and another when they know all of it or 3/4 of it just to tide them over until they get their new belt. For the Sensei it's very important to not test someone too quickly. Tape is just a good way of telling a kid "Good job" and giving them something to show for all their hard work. Me personally, I couldn't care if I ever tested again. Yes it would be nice but it's just not what I'm about. I just want to learn all I can and maybe find someone who feels the same and trade knowledge and just have fun. I firmly believe that the ones who are the ukes who get thrown around, beaten up and have their joints cranked every which way and LAUGH while it's being done and don't care if they'll walk the next day are the true martial artists. The ones who love what they do and would teach it to anyone for free even if they have just 5 minutes to spare.