Is it because of the large number of altcoins?
Take a look at the speed of Bitcoin development. It increases and decreases rapidly because of the news either by governments accepting or prohibiting Bitcoin. That is a very normal thing. But if you invest Bitcoin three or five years ago, you still find that Bitcoin's price is very high
Sure when new users use bitcoin is makes the price use to change as someday it become high and when a lot of people sell their bitcoin at low price as when the panic bitcoin the price of bitcoin is market get down, so its natural no need to be about the price fall of bitcoin, we are almost bitcoin legal users so we can say price will increase now, in my place bitcoin is being use everywhere and it is acceptable for all kind of transactions and payment for goods we want to buy, I think bitcoin price will go high with double speed than it was going down few months ago.