And thus do you find with the men of the tower (of Bavel), that they rebelled against the Holy One Blessed be He only out of satiety, as it is written (Ibid. 11:1-2) "And the whole earth was of one language and of one speech. And it came to pass, as they journeyed from the east, that they found a plain in the land of Shinar, and they sat there." The "sitting" here refers to eating and drinking, as in (Shemoth 32:6) "And the people sat down to eat and drink, and they arose to 'play.'" This is what caused them to say (Bereshith, Ibid. 4) "Come, let us build for ourselves a city and a tower with its top in heaven, and let us make a name for ourselves." What is said of them? (Ibid. 8) "And the L-rd scattered them from there over the face of all the earth."
How the Builders of Babel Rebelled After Eating Well
Sifrei Devarim 43:9