Expats What is something you struggle to understand about Swedish culture?

Married to a Swede, lived here 15 years, but there are still things that leave me gobsmacked. For example Yesterday had some furniture and other stuff I was just giving away. Nobody wanted to take it, but when I put put cheap prices on the stuff, they took it. Had a somewhat similar experience when for Halloween was in costume and passing out candy to everyone.There were old people acted like I was offering them horse dung. Swedes' resistance to free stuff? Would love an explanation.