Of course, for those who believe in the law of cause and effect, and the cycle of death and rebirth, but just want to do good deeds to obtain worldly benefits instead of ultimate liberation, it is not necessary to generate renunciation and bodhicitta. Yet for practitioners seeking the path of liberation and that of the bodhisattvas, arousing bodhicitta is a critical step that should be kept in focus particularly. 

~Depicted from From Believers to Boddhisattvas