Currently many people buy and hold crypto currencies for many reasons.
It will be interesting to share your goals in 2018.
Mine would be to make 20,000$ profit then I would take back my initial investment plus half of the profit. The remaining half will be used for re-investment.
How's about your goal and plan?
Place around 70% of my savings to bitcoins so it'll collect sone value once the price of bitcoins shoots up next year. Bitcoins' price today is $8000 and I bet it'll reach $9000 before the year ends. If bitcoins reach $10000 before 2018, then I'll place my money the day it reaches it.