Elves have entirely different drives and weakness to humans. Their emotional range is much greater and they just think weird. Crazy pointy eared tree-huggers that they are. It’s hard for us humans to talk about how they think. Someone once compared humans in comparison to elves as having a mental disorder, they can relate to each other but an elf can never fully get humans.
As a rule humans would be more emotionally stable and detached than elves. It's not that elves are capable of feeling more emotions than humans, it's that they feel the same emotions much more intensely. Bill King said something along the lines of "Elves are inherently bi-polar." If you look at a gifted humans with chronic manic-depression that gives you a rough idea of how oddly a 'normal' elf would act.