Basicly because the natural habitat of humans is to plunge into something without carefully learning the ins and outs of something.
forex was hyped a few years ago and after it got accesable to everybody with an internet connection people started trying it out.
As a results allot of people just started to gamble instead of figuring out a good and tested system.
Yes these days people want to earn online they think forex a best way in this contest. Forex is not as easy as they think that they will use internet and make money .Forex need `proper learning and trading practice otherwise they loose as most of the traders do.