Re: Aikido does not work at all in a fight.
In using [Aikido] to defend one's self, one is not to do to the attacker whatever one pleases. The presumption is that the attacker is not a bad person to whom anything can be done, but, rather, is a soul who has wandered from The Way. It is the duty of the Aikido practitioner to subdue the attacker without harming him, and to help the attacker back along the True Path.
This is great in theory but not in the "real world" To learn to put down the sword, one must first learn to use the sword. What will you do if the methods used (non-painful or damagin) as described above don't work. If you don't train realistically you have nothing to fall back on.