I think bitcoin will hit 50k usd for sure. im not an expert but this is just my opinion and i'm very positive on the market moves. The blockchain network is far better than any other database so I think price would definitely pump if all platform solve the issue of their bugs.
I don't know, maybe reaching a price of $ 10k is satisfying enough for me. well, you know, with the bitcoin price being quite high, I think a lot of altcoins have reached quite high prices from their ICO. well, I hope the price will be stable at a high price in 2019.