greed and no knowledge is the main reason
because like the old quote said "Risk come from not knowing what you're doing"
wich mean people must learn before earn, so they will not get sammed easily
if I do by studying and keep trying. even I started my investment and trading without knowledge. I had a good experience first and then became interested in learning more deeply. maybe I'm lucky, but it's a nice experience that keeps me going in this market. I don't blame what you said. but sometimes I have insufficient knowledge. experience in the market I think is more important in providing knowledge to us.