Sorry to go on!
Why are street fights the ultimate test? Because aikido isn't really designed for competition and because aikido is nothing without self-defence. I actually feel quite upset when people say that aikido is not a self-defence for them. I know it can mean much more (and does to me) however there are many people who benefit enormously from its self-defence aspect, and if it is not being taught as such they are being deluded into thinking it will be useable.