We should use our judgement. Do you believe you should spit on your opponent? If you truly believe this, then by all means spit.
Surely you realize that I was taking your argument to the extreme, for the sake of the discussion that you yourself started.
Just helping you stir the pot. Since that seems to be your motivation with this thread.
Me, I'll keep "helping" my opponent, if it suits me. And I will still be "competing", despite you believing that I'm not.