yes of course if it is very profitable you do not stop, but if you already feel hesitant to do that I think for now you better invest in the real thing and a little risk of loss or not the same as the currency crypto.
in any case, many people prefer to invest in real estate or securities, or maybe in precious metals, but no case gives such rapid growth of your financial opportunities, as possible with the crypto currency.
I agree with you stocks and real estate investments are the best investments in long term. In long term (10 years approx) you can´t be in loss statistical which is awesome, right?