Sweet and salty do NOT go together, they're disgusting.
Sweet things only really fit when it's with other sweet or not too flavorful things, like bread. But sweet and salty is the worst combination.
People who enjoy salted caramel are insane in my eyes. How can you enjoy it? Same with caramel corn. It's taking such a nice, sweet treat or something nice and salty and savory and ruining it with this weird, gross flavor combination that is just... awful. Hard to explain because I suck at explaining things.
The saltiness is too overpowering in the case of salted caramel, it makes it disgusting.
For other flavors together, I've tried things like pad thai in the past and they're great! Until the sweetness builds up and becomes gross and overpowering. This example I admit is skewed because I'm American and we're known for sweet things and probably sweetness is added all over the place, and I can't handle spice, but it's still annoying.
The only flavor that is good with sweetness is sour things and that's only if the sour is stronger than the sweet.
EDIT: Turns out sweetness isn't supposed to linger. I guess I might just taste things differently.