That's because we have Turkish supermarkets and Asian Cash and Carry on our doorstep where you can buy bunches of bristlingly fresh herbs as big as your head for 69p, creamy Turkish feta in rounds from a stainless steel vat, lovely flatbreads two feet long and a foot wide for £1, huge raw prawns for £12 a kilo, red snapper, flat doughnut peaches for £1 a box, tiny, syrupy little Muscat grapes, fresh yellow dates still on the branch....
Stop, mini - we moved out of our grimy bit of London that was stuffed with gorgeous Turkish grocers, and now we're in the sticks, we have to go to the nearest Waitrose and pay a stupid premium for less good stuff because the nearest Trurkish grocer is probably 100 miles. 
What I really hate is snobiness - when others look DOWN on you if you don't conform. We moved to a posh little village with a good school. We were really pleased with the area. However, we live on a small cauldisac of smaller houses in the village, and because these properties cost less than 300,000 (this is midlands area, not London) we are considered the poor relation. You should see the shock on other mums' faces when they see where I live as they toddle on back to their mansions. There us a real sense of looking down noses if you dont drink expensive wine, or if you drive a ford or an old car. If you dont have a gardener and your hedges are a mess then they've got something to say about it.
That's more or less our village (which was a really poor snap decision made for work reasons - in fact I'd never actually been here before we arrived in the removal van with a small baby), and I agree with you it's conformist and small-minded and highly irritating, but I wouldn't call it 'posh'. I'd call it 'aspirational lower middle class' - terribly anxious about status and keeping up with the Jones. And obsessed with respectability. The residents' association is outraged by the fact that an elderly couple are looking after their son's hippie van while he's abroad - having something painted with dragons, even on your private driveway, lowers the tone.
And apparently our road was a bit worried when two WC Irish people arrived (us), in case we'd 'bring the area down'. Especially as we were renting, rather than buying...