I was joking with one of my judo buddies and I said, "so what do you do with a old judoka? Do you take him to an open pasture with trees on the horizon..." He conceded it was hard for the older, injured judoka to continue training, especially with the younger stronger players. He then said, "if aikido got their s%$t together, we would train that. At the risk of derailing the thread, I think this is an important point. There are many good fighting systems that are natural feeders into aikido training. It is interesting that we spend a great deal of effort marginalizing the other arts. The 20-something MMA fighter could potentially be a 40-something aikido person if we do not alienate him... bringing fighting skill, energy, and the desire to embrace a new art.