We can make all the predictions that we want, but no one knows what the future holds for Bitcoin. Is it just a fad or could Bitcoin genuinely develop into an everyday currency? If it really took off, would the government not just ban it completely? Only time will tell, but for now let's speculate.
As of December 2017, the price of Bitcoin is past $18,000 – some people have made millions and billions investing in Bitcoin. Furthermore, there have been hard forks (i.e. splits) into things like Bitcoin Cash, which also have boosted people's profits.