Trading without stop loss is possible if you have that type of skills and strategy. Many people do hedging as a risk management policy instead of stop loss. Some do not use any of them. It is all about how much skilled you are. And what you are comfortable with. You have to find out your strength by yourself.
There is huge possibility of losing your money very quickly. That's why some people are scared of investing in forex trading. Even after that everyday millions of people are trading. And it is not necessary that everyone should do trading. There are many other business one can do. And many people are doing great with other business.