aznkarateboi

ok, im getting started and i checked out a few karate clubs. there are some questions that i would like answered 1. why would anyone use a stance in an actual fight? 2. why do people set that pulling arm forblocks, making them much slower? 3. why dont karate classesfocus more on teaching techniques that would be more useful on the street? 4. how do you escape from a headlock?