I work at a tiny greasebox diner. I have been that person for a lot of people. All of you who are being harsh would be surprised. Greasy food=comfort food for a lot of people, I get some of my lonlier customers 3-4 times a week. If your fast food guy is anything like me, he might care. At the same time, a drive through is hardly time enough for talking, so the people that are suggesting that may not have a point. If you need comfort food and are lonely, try a sit down resturaunt or anything indoor where you can at least get to know the people working there.
We're all reclusive sometimes. The people that are harsh are probably in high school. :)