And why does it hurt? You shouldn't be so sensitive, especially with stuff people say over the internet.
It hurts because your teachers will be crying over such bad English......the point of good English is to make it intelligible and say what you mean, when you post up 'because' you aren't qualifying the answer. Good English is important not for the grammar as much as making yourself understood clearly.
Hey, who knew police officers had so much training eh, must be good true the gun shop man says so.