I developed a peanut allergy at 23 years old. By the sound of things, your allergy is much more severe than mine, but I can certainly understand your frustration. For the most part, I have to ingest myself to have any reaction, but there's been a few times where I've had a mild reaction without eating peanuts. It's not the best way to go through life, but I've learned to adapt in the last 6 years.
I certainly miss a good PB & J or a Reese's cup, but missing them is better than anaphylactic shock, am I right?