With you on hamburgers. I've once had decent ones, at a posh American ski resort where they were obviously made freshly with high-quality beef, then grilled over charcoal, and served topped with sour cream & pickled cucumber. That's the only time I've eaten them in decades -- the BSE scare in the UK was a bit off-putting, even if one liked them.

And ketchup! I hate that so much I'd forgotten its existence. Baked beans, too.