Much agreed. I can't stand onions either, and I mostly only like tomatoes in sauce. My other big issue besides onions is actually cheese. I like most Italian cheeses I've tried (ricotta and mozzarella and I love Parmesan) but I can't stand cheddar cheese, American, Swiss, Colby, etc. People are always shocked that I don't like it. I get weird looks at restaurants a lot when I have to specify that yes, when I say "plain hamburger" I do in fact mean "plain hamburger," as in "meat and a bun."