I think that bitcoin in 2018 will grow. But in fact, all we can do is assume, but no one knows what will happen in the world of crypto currency in 2018, but I think that bitcoin will still be on top, but with the alts it will probably be more difficult, and by the end of the year the violas will go a little, remain the most promising.
I think it is very likely that this year bitcoin price and demand will be very high and bitcoin will become the most wanted crypto currency which will increase the world most favorite currency to the only crypto currency, bitcoin price is getting very high and at the end of the year 2018 bitcoin will become highest investment ever, right now at several places bitcoin is already legal but with bitcoin it is very possible that bitcoin will become world wide legal currency and 2018 will be the best year in bitcoin throughout the history of bitcoin,