I think that parliamentary system is more suitable to us as compared to presidential system. Because our country has a heterogeneous multi culture population. And we need a system which can give power to all. There are several spheres of power. Presidential system cannot meet this aspiration. So a bilateral legislative parliamentary system is best for us. Failure of democracy can be traced in our incapable educational system, Lacking publicly aware intelligentsia and a stagnant social structure knitted in orthodox Islamic and tribal fabric.
Regards