Kumar,I largely agree with you. But you can not count all the hindi speaking states in same breath. For example Himachal Pradesh ranks very highly in terms indices of education, social equality, prosperity, health, law and order and social empowerment. Same is true for Delhi (barring law and order).Although many things are to be learnt from TN, Maha, AP and Gujrat, but shear violation of constitution by Thakrays in MAHA, Modi in Gujrat, Dirty revenge politics of TN are certainly things other states SHOULD NOT EMULATE .