I'm understandably much worse about this in third world countries.

I like my chocolate and Red Bull. Don't have them every day, far from it, but particularly when I'm in the middle of nowhere, I start craving a bit of chocolate and Red Bull. There are adequate Red Bull substitutes, but what's on offer in the chocolate department can be pretty dire. In rural China, a friend and I broke down and settled for Oreos with neon fillings to try to get our chocolate fix. I've seen (and bought) Snickers bars in Africa that looked and tasted like they pre-dated the pyramids.