One of the biggest problems is the fact that there are few places where people accept it as payment mean. This is a cause of uncertainty for many people, but as bitcoin demonstrates its efficiency and safety, people come to accept it over time.
bitcoin is a more secure and efficient currency the only thing which is needed we have to invite people to adopt this currency we have to introduce it to our family members and to our other relatives so with that process the community of bitcoin will increase and we will see more people accepting bitcoin as payment.