We can't predict for long term but for 2 to 3 years bit coin will be used as the medium of exchange of goods and services. In coming future btc will have the highest value of all currency. If I see it as 10 years from now than it can be the currency of some country as dollar.
The entry of Bitcoin in the trading market had a big impact on the local investors. The government of each country reacted differently upon the start of ICO trading on the market. The future of Bitcoin is none predictable, no one knows about the ALT coin future in the market trading. The stability of Bitcoin on the market will always depend on the investment as posted.