The Maharil writes that every person must be filled with fear in fulfilling all that the Sages have established for the Seder and all they have put into the Haggada. Even if something may seem to be unimportant, one should realize that every detail has meaning.
The Shelah writes, “All the mitzvos of the Seder have lofty reasons, both revealed and hidden. It is a mitzvah to speak about them and to try to understand them.”
(Haggada Shel Pesach im Lekutei Taamim U’minhagim Page 5, from the Shelah)