I grew up in an open house too - but it came with so many downsides that I would now love a moat and wolves to guard the door
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Everything had to be 'just so' in case anyone called, nobody could mooch about - it was all 'are you not dressed yet? it's 8.00am! If anyone calls they'll think someone's died.' If my mum had called on anyone else she was quick to comment if they weren't 'visitor ready', too. '9.00, and she hadn't got her washing out!'
I may have gone too far the other way, but my home is my space, and I want to be able to do as I like when I like, without risk of comment. none of my friends expect 'drop-in' visitors either - a quick text is just manners, IMO. As I say, my children don't live near enough to risk us being our if they drop by, so it doesn't apply to them.