I see 3 possible outcomes.
- Bitcoin survives
- Bitcoin is flawed and collapses to 0
- A new crypto comes out that is revolutionary enough to displace the Bitcoin mining network in it's favor
Assuming Bitcoin survives: (Highly likely)
I can't imagine Bitcoin ever being used as a primary day-to-day currency. I can imagine Bitcoin being used as a platform for every other currency to back itself against, think about USD being a Bitcoin Alt-coin, pegged in value against Bitcoin like Litecoin is now...
Bitcoin already has an amazing network, it's amazing how such a beautiful thing could be created so quickly; this wasn't chance, mind you. The growth of the network is a direct measure of the desirability of Bitcoin. The existing world-wide network will give Bitcoin an advantage over any new currency to be created in the future, cementing Bitcoin in place until something more revolutionary comes along stealing the miners away...
The world will evolve; but this doesn't always happen quickly. The faster the world attempts a change, the more resistance it encounters... Bitcoin will experience plenty of resistance along the way but I think after the next major international gold scandal things will change. For the first time ever, the world is looking at a zero trust distributed public ledger to which tangible property can be pegged against. Imagine what would happen if gold ownership were pegged against the Bitcoin protocol; the impact of that alone would be huge.
I can see so many new innovations coming out. Once these new innovations come to fruition, things will evolve too rapidly to keep up with.
Bitcoin is so insanely valuable that when enough of the world picks it up and adopts it, big business will be pulling on it like a vacuum and then national governments will start to play too.
I just think it's going to be an interesting ride and having the nerves to hold 1 or 2 Bitcoin when the price exceeds the exchange equivalent of $1 million today will turn you into a superstar when it hits $1 Billion per coin after governments begin to store ownership rights of national assets within the blockchain.
The GDP will be valued in Bitcoin as the nations of the world will all use their own alternate currencies backed by Bitcoin.