If there are no risks, bitcoin investment won't be so interesting. Like a game. People are gambling 
i think gambling is not risky if you are expert in gambling many people lost their all bitcoin in gambling because they do not have enough knowledge about gambling and for me risk is involve in any activity but we need a good knowledge and information. I bet to disagree, gambling is also risky I think anything that involves losing money is risky. No matter how expert you are in gambling the chance of winning and losing is 50/50.