Bitcoin will not fall. As you can see from the graph, the number of unique Bitcoin addresses have increased greatly towards the end of 2017. It is believed to have continuously increased to the present time.
Well it did. It just doesn't seem so at the moment since we came from a very high all time high that for me, was unnatural for btc's movement. And that's why a lot of people are saying that btc will fall, because they're not used to seeing assets fall more than 60 percent.