With this, it should be clear why modern man cannot grasp the idea of sacrifices. Mitzvos and their evil counterpart relate to each other as two extremes of a pendulum. In the absence of the urge for idolatry, the corresponding impulse for elevated Divine service is mitigated. As the desire to worship idols is jarring to modern sensibilities, so too, the Avodas Hashem that was its counterweight. Let us give a general introduction to the need for Divine service.
Man needs action of solid substance in order to concretize moments of emotional highs.
Emotions and feelings ultimately evaporate in a blur of evanescent memories. True spirituality is captured only with the accompanying deeds that gives it life. Certain moments stand out forever in the life of a child. Searching out the dark corners of his home by candlelight, discovering the Chametz. Pesach Seder with his Zaidie.