Completely open plan is a pita, but before moving to the UK (over 10 years ago) I had never had a kitchen which wouldn't fit a dining table in as well, and here the two houses I lived in only had room for a breakfast bar in the kitchen and a separate dining room.
I absolutely loathe it, everyone still tries to perch up and eat in the kitchen, our dining room is massively underused in the winter as well (being north-facing and not cosy enough), when socialising I either miss 70% of the evening being in charge of the food, or everyone ends up hanging out in the kitchen and people are in the way/watch me prepare food closely getting on my nerves...in the last couple of years, the impossibility to entertain combined with having a baby basically made me give up on any friends coming round to it. It's also really inconvenient with small children, a small space quickly gets boring for crawling baby/toddlers, but I can't let the baby out of my sight, so have to lock her in the tiny kitchen space with me and then deal with her restlessness.
We have teenagers as well, but I honestly think it'd do them good to have to spend more time with the rest of the family!
Our washing machine is in the garage, dishwasher is quiet..
In my previous non-UK kitchen, socialising was going on only there, I had a round table with chairs and tub armchairs round it, and a sofa in the kitchen. Had a lounge but it wasn't used much as such, as I didn't have a telly or a fireplace(it was an apartment), so if I wanted to wind down I'd normally just read in bed... Now I cannot imagine life without a living room, but then if I did have a kitchen big enough for a sofa again it'd probably wouldn't be as important.
We are on the market and I am not even looking at houses which don't have a dining kitchen or where it's impossible to create one relatively easily, so fed up with just the cooking kitchen!
Yeah, by the way, cooking smells seems to be a UK specific problem (along with damp and mould etc), due to poor ventilation in houses. Where I'm from, all the extractor fans are in shafts taking smells outside.