For bitcoin, there can be no the point of no return. Now the price of bitcoin is falling, but it does not mean that bitcoin will die. Bitcoin is beginning to be used all over the world as a means of payment and investment, therefore, bitcoin technology is only at the beginning of its journey.
Yes there is no point of return. Bitcoin price going lower means it will come back with good results it happened earlier also. The investors will increase and the value will get automatically increased. Bitcoin has been approved in many countries and people started using it so there is no point of return going forward just believe in bitcoin for sure it will be profitable one day.