I don't either, and it doesn't even make me sick. I've heard about it being a contributor to obesity, too. I've gotten to the point where I have to read every label before buying something my husband can eat, so, like you, I avoid stuff I know can cause reactions. It's too bad companies don't take it out. Years ago I wrote to Hershey and asked why they wouldn't use real sugar. Surprisingly, I got an answer telling me they were switching their chocolate products back to real sugar -- one at a time. It's true, I've seen more and more Hershey products drop HFCS and go back to sugar.
Now, if Smuckers would just do the same thing.