Why sell stocks, they are so undervalued (especially Amazon)

I agree some people think that there is no profit in it, but in some stocks there are some good profits.
It is possible but most likely I would hold my stock till it will not be profitable anymore.
eyes holding it would give you advAntage in the long run but knowing or if you have good knowledge with bitcoin trading you can also try to sell it all and buy back after you already gain big with btc trades.