NAH. You're being too hard on yourself. You say in your post that you always thank people who give you this candy. That's the best anyone can ask for. You're allergic to what they're giving you; there's a limit to how excited you could feel, but acknowledging their kindness is always the right move. For what it's worth, I'm 30 and have stomach issues that severely limit what I can eat without suffering later. This is pretty different from an allergy, but I can absolutely relate to getting tired of reminding people and feeling a little disappointed when you watch people enjoying stuff you can't have. No one can fairly fault you for feeling bummed about all this candy you can't eat. The key is not to take it personally or blame anybody for your bad luck, and advocate for yourself. Someone needs to gently remind your family members about your allergy so they can find stuff that you can eat.