some would say that regardless of your sex of age, and regardless of the attackers' abillity, this is exactly what karate is supposed to prepare you for, and nothing more. In fact, Sensei tries to impress on us that in a real life situation, if you have to start fighting, then you have already failed, even if you kick the snot out of your assailant. Maybe not every style thinks this way. In Shotokan, this is the difference Funakoshi made betweem Karate-Do (way of life) and Karate-Jutsu (fighting system). never heard of World Oyama Karate, I assume it's got its name from Mas Oyama, the founder of Kyokushin? If so, read up on on his life and see how devastated he was after killing a thug with a single blow.