Bitcoin's price depends on the supply and demand. Its' price is going down because of other bitcoiners that are selling their bitcoins either when the price reaches a high exchange or they are just afraid of it may suddenly go really low. But soon enough, it's price will go high again because of the ones that will buy bitcoin, and it will really not fall down for real.
I am totally agree with you mate, the current bitcoin price falls just because many Bitcoiner are doing Panic Sell due to the issue of bitcoin bans in China and I also never doubt that bitcoin prices will soon rise again