The option is theirs , if they did not change a day of reconing is coming when every man would give account of himsefl before the almighty God. remember vanity +vanity = vanity.
It depends on the type of change you are advocating for. We have just had a change in governance, which saw the emegernce of Jonathan as president and many new state governors. But if you are referring to a violent change,then Nigerians must be prepared to follow the footsteps of Egyptians, Tunisians and of course Lybians. That type of change may not come at least in the foreseeable future. An average Nigerian cannot afford to take such risk that will put his life at stake.