no one can stop people using bitcoin. bitcoin provide convenience to its users. bitcoin provides comfort and security. people will start leaving the current conventional transaction.
But I think many people don't know enough about bitcoin and crypto currencies generally, or may be they have wrong ideas about this currencies. That's why they don't use bitcoin usually. And that's why the bitcoin's community should advertise more Bitcoin in social medias like facebook and twitter.
therefore, our duty is to tell those who are not familiar with bitcoin. bitcoin is the future, and now is the perfect time to introduce bitcoin to this world. bitcoin is a reformer medium of payment.