Lots of reasons to be a vegetarian, or just eat a lot less meat. This is one from a moral standpoint.

From a heath standpoint that might not be the case: http://www.accessdata.fda.gov/cms_ia/importalert_1148.html

"Conditions observed at multiple such firms in the state of Puebla included human feces and toilet paper found in growing fields and around facilities;"

Edit: remember folks, wash your veggies!