I also like to buy BTC now, I think BTC will increase again in the future with these reasons:
  _ BTC is the leader coin ( near all coin increase or decrease together BTC )
  _ BTC has  biggest market cap : ~53% all market
  _ And the most important: BTC is the least risky coin ((after near 1 year all coin decrease 5-10 times is normal, many coin decrease 100 times, but BTC decrease ~ 3 times,It shows the health of BTC )
  I hope the end 2018 and next year BTC and all crypto market will increase again,now we should buy and hold