The Saba of Kelm, zt"l, explains (Chochmah U’Mussar, Part 1, Siman 27): "Behold, something that happened many years ago, for which one should be moved and inspired, cannot simply be felt as it is. Therefore, Chazal advised us to bring it closer to our senses, meaning to create a true depiction. If one were a slave and was freed, what would he think then? He would contemplate the greatness of the master who freed him and would dedicate himself and everything he has to the master forever. Through this depiction, the memory of Yetzias Mitzrayim (the Exodus from Egypt) would make a strong impression on him. It turns out that their intention was not to require one to feel as if he himself left Egypt – that is only possible for the great sages – but rather to obligate a person to bring the miracle of Yetzias Mitzrayim closer to his senses, meaning to imagine as if the event happened to him in reality, and through this, he will be inspired by the miracle."

In other words, it is not incumbent upon a person to reach the ultimate feeling as if he himself left Mitzrayim (Egypt). However, he is obligated to contemplate according to his own abilities and to bring the matter closer to his intellect according to his level, and in this, he fulfills his obligation.