Eating healthy is an investment in your future. Trawling through NYC looking for the latest expensive, fashionable, gourmet taste titillation and bragging to social-security grandma about it... something like THAT is guilt-worthy.
If you have ever been sick and had good food bring you back to health, then you need no further convincing. Also, you are voting with your wallet - the more demand there is for Primal-quality foodstuffs, the better for people and generally the better for the environment. If you average that 100 bucks out over all your meals for one week, I will bet you can't eat out that well for that money. I used to work at the WTC before 9-11, and a simple smoothie was 5 bucks down on the concourse back then!
I have a mantra that I have spouted for years... "If I eat right, I feel right. If I feel right, I exercise right. If I exercise right, I think right. If I think right, I eat right..." Phil-SC