Of course it matters. It's easy to say that it doesn't and that we should be concerning ourselves with the network or whatnot, but lets not forget that it is the miners that prop up and support the entire network and the only reason the vast a majority of them do so it to turn a profit. If the currency was to fall to a price that they were operating at a loss they would soon shut up shop.
Its a big Yes for me. The price of bitcoin really matters because it is the main factor that investors and users get interested in bitcoin. The downtrend price initiates investors to start buying btc and holding it until price will reach to its peak. Traders start selling bitcoins at a certain price that they will gain big profits.