Your choice should only be based on the stats of your system. Never use any information from somebody else unless you checked it in your system. Your system will generate the profits or the losses... I traded a few years with a 2 points stop and raised it now to 3 points. Drawdown stays the same and overall profits went up. So even within your own system you should check again on a regular basis. In trading nothing is static, it is dynamic. You should be dynamic too.
Only in trading? All the universe is dinamic. But in every human activity you have to start from a "secure base", then go as far you can.
Yup. Case in point. I went fir s runner trade on thurs. So I moved the target out to 5 points. Guess what. Trade hit 3 points. Never hit 5 and I ended up at 0 break even. I just must stick to a reasonable exit.