Yes I Agree, bitcoin is very helpful, to the many people  ,who  believe in  bitcoin,  because bitcoin is   a currency  , stock market and can gain a profit ,   before i am afraid of bitcoin , because when the value go down i was panic and i sell may bitcoin, but  realize im a mistake, so i change  when bitcoin go down then i buy, when it go up i sell, now i earn profit, and bitcoin is very helpful , especially  i have a small income for my salary.