But today it's becoming more and more clear what it'll eventually end up being: not a payment network, not a private way of transacting, but digital (yet secure) gold. That's all Bitcoin will most likely ever be and that is totally fine.
There is something to be said about an asset that is held outside of the traditional financial system. I'm not a Bitcoin bull, but I also wouldn't be surprised if a coin hits $100,000 (or more) sometime in the next few years.
Ethereum though.. I'm more curious about how that will turn out. Seems to have many potential interesting use cases