It's not like cooking at home isn't going to yield quite some resistance. A salad is equally as easy to go buy.
I think at the office my escapist tendencies just kick in: anything for a reprieve of the more stressful environment I was in.
When I work with nice colleagues and stress levels are okay, we would usually go out for lunch and I'd eat much better. I think it's a combination of stress and commuting downtown that made go for worse options. Dunno…
Seems to help to create systems that let us fall to the level of compliance we desire.