Food? Food. Food!

The topic for today's question is courtesy of Starr, who has kindly offered several question topics for submission. A couple were already in place other places, but this one I hadn't been ready to approach yet. It is a little broad, and I may choose to narrow it later, but for now, here goes:

When it comes to food, everyone has their own ideas, philosophies, and quirks. Whether your diet is spectacularly color coded, you think eating meat is murder, or you simply like to cut out the toxic foods from your diet, you certainly have your own thing. What is peculiar about your own diet? What drives these choices? Do you ever vary from your philosophic decisions, or do you stick to your guns?