in some cases stop loss is not suitable, for example overnight individual stock trading, even in the tading session, stop loss still does not work, for a rare case, the market suddenly suspends its trading activity, and it will post pending news. so stop loss really is misunderstood or misused by many people.
put those factors into consideration, stop loss is useless. most people think stop loss will save them, but it does not. a better way or professional way is use option to protect your position (so you know how much you will lose, your loss is controlled loss).
stop loss concept is broker's idea, they want you to cut loss frequently, and they collect as much as possible commission or your overtrading fee. or they want you to be a sucker's player.
I learned it hard way. when I started to trade, I am fearless, so I made money, then I heard about the stop loss cutting way, I tried it, I started to lose and struggle, most time 99.9% time my trades should work out very profitablly, but I was stuck with the stop loss, I struggled with tow years on that, then I said to myself and I look back to my trades, I said to myself, wait a minute, why I was right and keeping giving money to the market, that is bullshit, stop it.
the better way is reduce size to a confortable way, and you are not sick of the little up/down, and you can go with the bumpy ridng, but you try to ride the major trend.
currently I am trading futures, stop loss is useful since the market is 24hrs tradable, but I rerely use it, I use mental stop loss, only when I am away from the market, I put a physical stop loss there, but as you know, that does not makes any sense, just a tick move, the stop loss may get hit, and you are right and the market moves without you, will you go mad? definitely
stop loss is a good strategy in breakout/breakdown trading or momentum trading, but not good for risk management