Gluttony
Etymology
From Old French "glotonie," from "gloton" (glutton), from Latin "gluttire" (to gulp down, swallow) and "gula" (throat, gullet). The word keeps the physical image of the working throat, endlessly swallowing.
noun · /GLUT-un-ee/
Overindulgence, especially in food and drink, beyond need or measure.
What it names
Names consumption for its own sake — taking more than one needs simply because one can.
Example
The all-you-can-eat model quietly rewards gluttony and calls it value.
Related idea
Greed is the hunger to have and hoard; gluttony is the hunger to consume. One accumulates, the other devours.