If you enjoy it and are able to learn something or make some profit, it can be worth your time.
But if you aren't having fun, or making a living, there are plenty of other things you can do with your time.
You can earn just as much from other jobs or hobbies.
I think it's mainly due to the fact that it is similar to what gamblers are experiencing when losing. If they for example lose $100, then they will try to win it back, which can basically go on for quite a long time. Exactly that is also the case with people making loss after loss with trading. They are trying to gain it back while in reality they sink deeper and deeper.
A true trader will not do that. If a trader lose, he will just shrugged that and work again. Losing is a part of trading, you cannot get away from that. All you have to do is accept that and up your game.
Solid traders indeed move forward quickly when making a bad trade that costs them money, but I am not talking about these traders. I am talking about the people that can't accept any losses, and don't know what they did wrong, and when to stop.
Thats very good thought.