Well, not being satisfied with the quality of life, living conditions, corrupt politicians, low wages, lack of transparity and equality, lack of adequate education and career opportunies is a pretty good reason to criticise your own country, I'd say, and that often happens to be the case in the so-called "third world". Everyone wants to be able to live a comfortable life, and if your country can't offer you that, you're naturally going to be disillusioned with it.