The journey of bitcoin from 2009 to 2017 is very interesting. Although the stories of individuals(investors) are very interesting and motivational that how they initiated and what problems they faced at earlier stages.
In 2017 the number of businesses accepting bitcoin continues to increase. Where you see the bitcoin in 2018?
Bitcoin will be even more popular than before. Large vendors like Amazon will implement bitcoin as a payment option which will eventually influence other vendor's to use this method too. Cryptocurrency will become a common trend among laymen and it will continue increasing in price and demand till it's limit is maxed out.
I doubt that bitcoin will be used to pay for goods in online stores, as it is very inconvenient to pay. Slow and expensive.