In many restaurants, giving away leftover food breaks strict policy (seriously, it's in the handbook). That food is still company property, and handing it out can mess with inventory and profits. From a management view, enforcing rules strictly makes business sense.

Saw a huge argument about this on Reddit yesterday. It totally ruined a cool science thread. Your mileage may vary, but I feel you, @martin.nancy.

The creek behind my old school got green again last year.