Hindus see human life as a passage through four stages: student (celibate), householder, hermit, renunciant. A lot of men like stage two so much they basically lose their zeal for any other stage.
Fish swim, birds fly, rats scurry. Everyone acts according to his level of consciousness, to the degree of his evolvement. Not for us the rites of condemnation or laudation. Were there no sinners, there’d be no saints.