Bitcoin achieves a certain value. They are used for shaping many economic transactions. People also use this money to invest. And hoarding value. So this currency is now without limits
Prediction is not the real thing about the future price of bitcoin. According to my experience I never find any predictions to the point because if we go back few months in the previous year many people predicted that 2018 will be the year of bitcoin but the fact is against those predictions. This year is the worst year for bitcoin so far and there is no signs for growth in the future in the coming few months.
In my opinion the future of bitcoin is very bright, although the price in these days is low and many people discouraged from bitcoin, but it is obvious that in the future the price of bitcoin will grow more and investors will make huge profits. One thing more that bitcoin will take over the market in the future and will be the mainstream in the future, thats why people want to invest in bitcoin.
I think we should worry about our future rather than getting worried about the Bitcoins future. Why is it so, because Bitcoin has a bright future and those who think that it is going low and they decide that it is going to collapse is out of mind. So it would be very good if we think for our future and almost all the predictions which have made so far are uncertain with the actual Bitcoins values.