I guess we'll have to agree to disagree on this. The analogy would be no live-fire exercises in military training because someone might get hurt, or worse, killed. When it comes to facing the enemy, they will pull no punches, and use no fancy laser-tag systems or simmunitions. Their intent is to kill or maim you. I intend to train to that level if I want to not end up dead, and I try to instill that in my flight students on a daily basis. Many new officers in the military do not comprehend the fact that they are learning to fly a war machine designed to kill the enemy, or at least survive long enough to get your comrades out of harm's way. I can't help but approach a martial art from the same position. It's a martial art after all. I firmly believe that you cannot master an art designed to kill, unless you're willing to accept some risk of injury.
My real point is, you will stop progressing as a practitioner unless you're willing to go to that next step. You will plateau at a point in your training where you simply cannot get any better because the laws of physics prohibit techniques from behaving accurately at less than 'dangerous' speeds, or develop the reaction times to respond to full-speed techniques. I have a hard time walking in the door knowing from the get-go, that a school will never let you progress to that level despite your actual skill. Safety is of paramount importance when you're starting and you have little control or understanding. But you have to go in to it accepting that you will hit a wall that can only be broken through with full speed and power. Make no mistake, in period, these men were learning to kill, not to practice a recreational activity for a hobby. That's what I find intriguing about ARMA. John Clements understands that we're not going to walk in to a store and have to defend our lives or honor with a sword, but he does his best to bridge that gap in the modern psyche which is where the biggest disconnect is in several WMA schools. My real beef with a lot of HEMA/WMA schools is that there's a zero-tolerance for a lot of willing students to accept risk, when that may be the only way to truly become great. Even the SCA guys are proud of their battle-wounds. A broken finger here or there is really part of the game, look at anyone in competitive or professional sports. In the historical sports world, look at full contact jousters, getting hurt and breaking bones is inherent to the sport. I'm not saying that's for everyone, but I hope that the sport progresses to a level where it's accepted on some level that certain individuals want to compete at that tier.