It was quite shocking for me as somebody from eastern Europe to see ie Danish or Dutch homes having no curtains whatsoever, so me walking on sidewalk looking at them 3m from me behind the windows having breakfast, in pyjamas, kids doing early morning nasal cavities treasure hunt with finger etc.

Same for living rooms and bedrooms (those I would expect to at least have some curtains aside).

Still not used to it, i like my privacy and ability to shamelessly say scratch my butt when alone if needed.