The only disadvantage I see in bitcoin at a moment is that the usage of bitcoin is very limited and it cannot be used at most of the places for shopping or paying at restaurants as bitcoin is still new to many countries and it will take long time to reach everywhere.
Your so called disadvantage or personal problem can be solve easily. By simply converting your Bitcoin into Fiat you are not only solving your but also will make you save a lot of time. Because the confirmation time of sending Bitcoin as a payment is long in which you will also consider a problem. If you convert your Bitcoin to Fiat you are hitting two birds with one stone.