Why congress party always apply use and throw method for good people in india ?

congress use[1] gandhiji for getting power of whole india and throw , [2] amitab bacchan use and throw , Rajiv gandi did not talk with amitab in delhi as friend , he did not evan sit with him in parlament , Rajiv gandhi insult amitab that time.[3] rajesh khanna -The first superstare of boliwood.he is been treated like dog in congress meeting- no respect,..many leaders vpsing, sitaram , pv narshima rav , resent videssh mantri mr.patil. ,... many