One of the problems with the way we live and work is that it's so easy to go for the quick option. If you're working 60+ hours a week or trying to run a busy household, unhealthy food options are really attractive for you because they're so convenient. People generally know what good food is, it's just that they make the sacrifice because there's other things going on in their lives.
I've said things like this before and people respond like "well, I run my own business and raise a family and volunteer at my church and so on and on... AND cook perfectly healthy meals 3 times a day!" That's awesome for you, you're amazing, but let's get real.