House prices? XD
We are currently on a 20% unemployment rate. That will mean more people without a job, aka more poor people. The state will have less money to pay for public education and healthcare, since we have to save to pay our ever-growing debt, which will make things worse. Since the state will have to spend their money paying debt, they'll be unable to create public jobs, increasing the unemployment in turn.
Meanwhile, if the Euro ended, the new old currencies would have a crazy value drop, meaning that the banks would be forced to restrict the amount of money people can take every day (what we call "corralito" here, aka Argentina 2001). That would mean higher prices for everything, lower salaries and more poverty.
As a result, the markets would be insanely paranoid of buying debt from any European countries, making it harder for us to get credits, forcing the countries to cut even more services to make sure they can pay everything just with taxes... hello higher taxes for everybody.
That's, of course, the dark future. There is still a chance to save everything, but it requires several politicians doing everything they haven't dared to do yet fearing anger from their citizens because "they'd be paying for other people's debt" and "they'd lose sovereignty" and other bullcrap. It's their last chance before they destroy Europe.
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