I don't think the cryptocurrency market is going anywhere up eventually up. Once it becomes a part of everyday life the market will explode.
I see people making things like locks that are opened through the blockchain and rental services using crypto with these types of apps and I think, "that is the future."
Now the question of which currency to invest in may constantly change. Imagine when companies like Amazon just create their own currency. Will that have an effect on Bitcoin prices? I would imagine it would. That's what makes cryptocurrency so exciting. Every investor knows the potential, but the possibilities create some crazy unknown possibilities.
Yeah, the blockchain technology is the future... we will have to wait and see. Tons of regulations are coming soon enough trying to control it but who knows :)