> but most (really all) employees are in it for money

Yes, but some also have a moral conscience and were brought up to not take more than they need.

If you are not one of these types of people, then not taking complete over advantage of an offer like free meals probably seems like an alien concept.

I try to hire more people like this, it makes for a much stronger workforce when people are not all out to get whatever they can for themselves and look out for each others interests more.