I don't think bitcoin will be able to grow to 100,000 USD in 2018. In my opinion, bitcoin can grow to $ 40,000 dollars.
This will lead to the capitalization of the crypto-currency market in $ 2 trillion.
When that happens that bitcoin reaches $100k in this year then it will again be the talk of the whole wide world, I am also wishing that it would happen so that many people will encourage to invest again and so that those who had invested last year when the price is at $19-$20k can now have the chance to gain when they did not panicked at all.