At present, the exchange rate of BTC is increasing suddenly when the exchange rate reaches $ 7,700 and will increase in the next time. Therefore investing and holding BTC at this time is a good decision because the BTC rate is expected to reach $ 30,000 by the end of 2018.
By who it is expected to reach 30,000$?
Who is making these predictions and based on what? Do not trust these predictions and do not care about price in one year. HODL for 5 years and you will see

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Whoever does that predictions, they may be right. If BTC gets approved in a month by ETF then the price can rise substantially.