There's a high chance that we might see sub-$10k by January as this month is notoriously known to be the month where bitcoin struggles the most. Chances are we hold $13-$14k and not see sub-$10k or see $10k and be brought to the depths of $7500-$8000 before a yet another extreme run to higher highs. Lots of possibilities and we, as mere speculators, can only guess.

I'm thinking we won't go back to sub $10K levels any more, since the upward resistance at the $10K level will probably be very strong. I think the price will continue to remain below the $15K level for some months, and the push will begin towards the second quarter of the year. But as always, this is just speculation since it is pretty much impossible to determine the future course of cryptocurrencies.

Based on the last big fall from 4 years ago then you might expect a slow fall throughout 2018 to end up sub 4k.

Problem is, this time bitcoin is broken, so unless it gets fixed there's no reason it can't go lower. I mean, how can something that doesn't do what it was meant to, be worth $1 million let alone $200 billion.

The bigger risk is something becomes bigger than btc (possibly eth) but that could then trigger a sudden realization that there isn't anything particularly special about btc so could then fall yet further.

Why are investors going to invest in something that doesn't work and is valued at $200 billion. Investors invest in things that are either very cheap with a big upside, or something that offers a reasonable dividend. Your Dad might invest $1000 dollars but institutional investors will look elsewhere.

Yes,I think bitcoin price will decrease below $10K,I think it will go upto $8K.This is happening due to the high transaction fee I think because we can't use our bitcoins when needed most so people look for coins with faster transaction and cheaper fee.So only the price of ripple bumping in recent days.

after down a month ago, and for now raise again...
I think downtrend will be happen again, but my prediction is still above $10.000

With the current downward move I can tell you that it will certainly reach $ 10K even down under $ 10k in the new year. This would be something that would make those who own bitcoin sad.

Yes, there's a high chance that it will go back to 10k or lower since the price is so volatile but I believe that it will recover and exceed 20k in 2018.

It will mostly hover around 10-20k for the first few months of January and then will get it's break again and increase in value again. Asians long as there's no much of panic selling the fluctuations will eventually bring up bitcoin's value back up.

It is also possible to happen. Nothing is impossible when it comes to bitcoin. When people we're encouraged to engage to other crypto i think that might happen.