I have found an interesting article in Forbes magazine - "Where Will Bitcoin, Ethereum, Ripple And Other Cryptocurrencies Be Twenty Years From Now"?
So. here are some quotes from it.

Acceptance. Until and unless Buyers keep pressing / asking Merchant to accept Bitcoins, merchants will be oblivious to the demand. If you walk into a store and ask if they accept Bitcoins and they answer No, this is the expected answer. Repeat this scenario with 10 other Buyers asking the same and the Merchant will think differently. They just might start looking at Bitcoin acceptance.

Volatility will minimize. I won't say it will disappear, the public at large is too sensitive to everything the media spews out relating to Bitcoins.

Bitcoin exchanges in the West (perhaps US, or UK) will prosper and take over in volume (provided international clients are allowed to hop in and trade).