Waste and environmental pollution
Wasting food while other people are dying because they doesn't have what you have, it's really unfair; maybe you don't throw away with a bad intention but it have a negative impact either environmentally or socially . Some people don't waste because they have but because they doesn't have knowledge about subproduct, doesn't have the way to conserve or economic problem.
Wasting food is contamination too because where you throw that food? Everything we throw away have an negative impact environmentally. Any waste generates lixiviation while we throw away trying to have welfare but we have only one planet. Anything we throw away will have a treatment depending the country. Some country doesn't have the waste management. According to FAO (2011), wasting food represent a waste of natural resources using in production like soil, water and energy increasing greenhouse effect.
If we generate subproduct with those food we will mitigate the pollution and feed people who don't have.