One of the reason why I think they do that, is because of GREED which can result to a big loss for them.
Start with education, make a lot of research, do some practice trading online
and use it later on in real life. Don't rush to earn money because in trading its hard to do so.
Are you a trader in mind but scared inside?
Be more patient, develop your emotion and win in this market.
The result not only big loss but also we can gain big profit if we put our big noney into trading.
Nothing with no risk so try to think wise and put your money into trading as much as you can afford to lose.