Investing in bitcoin is not about having afraid or not. I believe that each of us has a cause we are willing to risk our resources for. Not all wealthy men engage in the same activities, even if some wealthy men are doing them publicly. Some wealthy men who are not solely investing in Bitcoin may also take risks with their money in other ventures not in bitcoin. 

Despite how exciting the future may look toward bitcoin, some people cannot risk their fortune on volatile assets like bitcoin since they do not know what the future holds for them. People can only spend their entire budget on things in which they have complete faith, not on what they observe wealthy men doing.