Bitcoin future as of now is so hard to predict because of its performance nowadays. But I'm pretty sure there will be a high increase again next year, ( in fact it's always happened every year. but in 2019 not too much in my opinion.) And real talk it will not stay for long time again because of some causes, which is for sure it will collapse again after the growth rate bullish .
I hope that wouldn't be the case. I just wish that cryptocurrencies in general could get accepted by masses
As time goes on, I want to believe adoption would increase as the technology keeps advancing and we see bitcoin becoming a house hold name in terms of usage as a currency. Yes, for that to happen we need more people/country to adopt bitcoins compared to what we are having and what few countries are doing. Time is the only answer for all of these.
For what it is worth, we all so much believe that the future is meant to be great even if we cannot see it, so looking at 2019 is just best left with 2019 as we will see what becomes of the space as well as bitcoin when that time comes. For now, we are just stuck with the present moment, and hopefully, get to utilize the moment effectively.