I was diagnosed at age 11. For years, I was in denial about a lot of the foods I knew I wasn't supposed to have, but I ate them anyway. Sometimes when I was constantly sick, I felt exactly how you are describing. Like everything was doomed anyhow, and what was it going to matter if I slipped up. Looking back, the bag of popcorn I ate in the movie theater followed by the bag of nuts were not worth the week long hospital visit!
Sure, we've all got dietary restrictions. Meeting with a dietician could be a really good chance for you to feel out which foods might be easy for you to eat when you're not feeling good. No two people have the same body, so there's always foods you may be able to eat which might not hurt you at all.
Also, I found exploring the options of other foods I could eat without getting sick really did make up for the things I couldn't have any more. If spicy foods are your thing, perhaps seeking out foods with strong flavors might appeal to you. While hot wings might not be a good idea, perhaps some other kind of barbeque sauce marinated in baked chicken could be a new favorite. In fact, I have seen Dr. Pepper Barbeque sauce before. Sounds like it could go great with baked sweet potatoes.
Good luck to you!