While I believe other coins will inevitably be better suited for handling transactions than bitcoin, bitcoin may end up being the best store of value due to the amount of liquidity it has. Because of this bitcoin tends to act as the gateway to alternative currencies/tokens. It seems like a weird self-fulfilling prophecy.

I predict even when a better chain comes along than bitcoin, bitcoin will still enjoy the benefit of being the gateway to and from traditional funds. Demand for alts will create demand for bitcoin which I think we already see.