Many of american people buy bitcoin for their retirement, so they save bitcoin for long term. I have the same plan with them, I still thrust to bitcoin rather than other cryptocurrency. Although people said that save wealth in form of bitcoin is risky but I knew that I take this risk with good reason.
Yes, only long term investor are taking high risk, and gaining high profit. But i suggest that dont invest all your money, just invest some, for you to not be bankrupt if your investments failed. Bitcoin is great to invest, but always remember that bitcoin is not sure gaining of profit, and not sure that is safe. So be a wise investor, for you to not be scammed and to be successful someday.