I've just joined a local traditional Aikido club. Everyone wares a white bet, and that's for ever. Only the acting Sensei can ware a black belt even though most of the members have 10 years plus years under their belts. I attended a course there yesterday; there was hundreds of years of experience on the floor with only the course sensei and their senpai in hakama; and those had white belts too. I asked for he reason from a yudansha from Ireland; "We don't sell Ego here son." he said. I thanked an elder member for his tuition, he was from Holland; "Don't call me Sensei; I'm a beginner in life as you are." These guys have blown me away.