Bitcoin could do anything, the value has moved from $900 to 3 times that in less than 6 months. The fork and BCC being created may have an impact, but it will not be the end of BTC.

The fact is that the market is flooded with all kinds of cryptocurrency creations all following Bitcoin, and even more so once bitcoin started to grow in value. The fork and BCC coming into the picture is more like an earthworm being cut in two and then growing into two separate organisms, both came from BTC. BTC will continue on and BCC will have a life of its own. Will it impact BTC some? Yes it probably will, but with BTC being so volatile to begin with there is not much you can do to identify if the price changes due to BCC or just because.
I think that BCC was created to extend the life, or availability, of available blocks to be farmed and created more of a market for one or both after the fact. Just the fact that so many people are thinking about "what's going to happen?", and the press that the fork has created will only impact in a positive way. BTC is not going to die. If it does than it is not due to BCC its because the entire cryptocurrency market has collapsed and nothing will be left standing.