torture is not torture

I was wondering why many people choose to make simple things so complex.

For instance "torture" has come under the spotlight of definitions and made up phrases (enhanced interrogation techniques). I don't see it as much more complex than this, "if it was done to me, would I think I was being tortured?"

Can someone explain to me how it needs to be more complex? Besides so "torture" can be justified via being "not torture".