Right now bitcoin has reached very small percentage of the world people. It needs to travel long days to reach the majority of the population. By 2020 can expect a far better adoption as well usage from the people around the world as it has been predicted to be an big year for the entire digital currency network.
i think it will have to take another generation for bitcoin to be integrated well into our livelihoods because there are still a significant amount of people out there without education and old and such can hardly make it to using bitcoin. There are those who are so poor they can't afford a meal not to talk about owning a smartphone or having access to the internet and so until all these socio-economic problems are solved not everyone can know and use bitcoin.