I used to think that BTC would fade away, especially when Ethereum and then BCH. But then I realized something....It won't!!
Most of the leading cryptocurrency projects has something that makes them unique. For example, BTC is paired with virtually every other crypto and it seems a "safe haven" or a place to store large value. It does not compete with Eth because Eth is all about smart contracts, etc. What about the BCH competition or rivalry? Well, BCH is faster and cheaper to transact and that is a great thing. However, I don't think it hurts BTC because of the reasons I mentioned earlier. In a way, we're kind of all on the same team as we want to see the crypto world grow and become a viable alternative to the traditional fiat system. Those are my two cents!