Quote from dandxg:
"the market wants to take your money. and perverse incentives are created when u are rewarded for doing the wrong thing (like not taking a stop, and then having the trade reverse and make money). that is the WORST thing that can happen because it incentivizes doing the wrong thing"
I couldn't agree with that more. I learned that from my trading buddy. He gets more upset when he doesn't take a set up and it loses, then when he takes a flyer and it wins because it reinforces bad behavior.
Most newer traders won't get it. I am glad someone showed it to me. On top of that it ruins your statistical probabliities.