הלכה על ברכות 70:26

It is from the roots of this commandment [that it is] in order that we be aroused through this act to remember the greatness of the day and that we fix upon our hearts faith in the creation of the world, "that in six days the Lord made, etc." (Exodus 20:11). And therefore, we are obligated to do an act with wine - since the nature of man is to be greatly aroused by it (Berakhot 35b), as it satiates and causes joy. And I have already said to you that according to the arousal of a man and his acts will he always be acted upon towards things. And from this root did they, may their memory be blessed, say in the Gemara (Pesachim 106b), that if bread is more beloved to a person, he should sanctify [the day] over bread - since then his nature will be more aroused by that which he craves. And even though in the departure of the day, they did not say this, but rather obligated him to recite Havdalah with wine nonetheless, they were correct with this as well; since they, may their memory be blessed, as well as the perfect Torah, will always choose to go according to the majority. And in truth, the majority of the world will desire drinking over eating at the conclusion of Shabbat; since they have already [eaten] a large meal during the day in honor of the Shabbat. And there is no need to give a reason for their obligating us that there be a reviit of wine in the cup; since less than this amount is not fitting and will not arouse the heart of a man upon it. And that which they obligated us in rinsing the cup (Berakhot 51a), and not to drink anything until he recites the Kiddush (Pesachim 105a) and that he recites the Kiddush at the location of his meal - all of [these] are branches of the root of arousal that I [discussed].