Here is the Catholic position -- we should try to "eat to live, not live to eat" and certainly not waste food, when you have been blessed by God with plenty to eat.
It is absurd and disgraceful for one to live magnificently and luxuriously when so many go hungry.
St. Clement of Alexandria (150-215AD) on Poverty and Riches
Mini-Bio: Greek; theologian, head of the Catechetical School at Alexandria, Egypt