True. There are many techniques you would have to apply differently, or follow up with a non Aikido move like a strike and that could go wrong if you dont practice that way. There are also some techniques that would never be used or seen on the streets that are practiced for traditional reasons, like empy hand Shomenuchi. Thats why I wanted to clarify why Aikido is not easy to learn in regards to this subject. If your in it for life then its useful, if you just want to learn some self defense skills take something else.I hear you. But it won't really end it. Originally, these were used to ultimately stick a blade through a chink in an opponents armor on the battlefield.