...I still believe that by the end of 2018 it will have an increase of thousands of dollars, but at the same time I feel that it will drop much more than it is now before starting the growth again...
It happened now, and the downturn is so much more than you projected. But this is not surprising with the current market situation that we have. Bitcoin and altcoins are proportionally correlated. Every coin is suffering severe plunge now. But I'm always a fan of bitcoin and eth. I still believe that these two are undervalued, considering that the technology is still young. Just looking at how it behaved in the past, I'm pretty sure that it will always see recovery, even surpassing its previous record high. It's still worth buying, especially nowadays.